If you are looking for a way to easily mount the OpenLog here is a 3D mounting bracket that I created while playing around with Tinkercad: https://tinkercad.com/things/90GBdK6gfK3
We love the OpenLog at Ardusat! Thanks SparkFun!

hi Nate Here in Tokyo (2017) I got an old Openlog 09530 and had to buy a similar GPS module to your GPS Receiver-EM-506, a Canmore GMS6-CR6 http://akizukidenshi.com/download/ds/canmore/GMS6-CR6_v1.1_9600.pdf

I connected the GND and VCC of both to a 3.6v 800mAh battery and connected PIN 6 of the GPS module, "Asynchronous serial output at TTL level, to output NMEA message" to the RXI on the Openlog.

I put a Toshiba 16GB microSDHC UHS-I card in the Openlog and..... nothing, no blue lights to indicate writing...

The GND and + battery wires are soldered together with the GND and + of the GPS, and then both are soldered to the GND & Vcc pins coming off the Openlog The GPS module looks technically similar to Sparkfun's EM-506 (see below && links)

any help again appreciated very much!!!

GMS6-CR6(SIRF-IV) http://akizukidenshi.com/download/ds/canmore/GMS6-CR6_v1.1_9600.pdf Receiver Type 48 parallel channels, L1 C/A code Accuracy Position 2.5m CEP Velocity 0.1m/sec
Startup Time
< 1sec hot start(average) < 34sec cold start Signal Reacquisition 1s Sensitivity -150dBm acquisition -160 dBm tracking Update Rate 1Hz standard
(5Hz/10Hz special order) Dynamics 4G (39.2m/sec2) Serial Interface LVTTL level Protocol NMEA-0183 V3.01 GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG, 9600*baud, 8, N, 1 Datum Default WGS-84 User definable Input Voltage 3.3~6V DC +/-10% Power Consumption < 35mA (1Hz standard version,tracking

Got my OpenLog and it works perfect right out of the box. Logging data was cake! Using a PIC18F4620, basic UART at 9600. Works perfect.

Awesome product, I recommend it.

Hello, I am measuring current supply peaks up to 50mA, with 24-35mA average at the input of the OpenLog BB when a 9600baud stream of data is entering. I have tested three different OpenLog breakout boards and it is the same in all off them. The SD card is a 4Gb original Kingston. Is that power consume normal for these boards? I read up to 6mA -full load- in the documentation, and 1-2mA in iddle state (this point true and measured here). Please,could the SD brand/capacity be blamed for it or in your experience it happening the same? Thanks, Maxi Guzman

I've purchased this awesome device, though I have one small problem with it: I have it basically 'sniffing' serial communications going from an Arduino to a radio transmitter (so everything that is sent to the radio is saved onto the SD card). About 50% of the time the OpenLog starts blinking and not writing anything - it goes into 'emergency mode', this means that the RX pin was LOW for at least two seconds.

As you can imagine, this is quite bad. There is a 50% chance that the OpenLog will do absolutely nothing upon boot. I know that I can reflash the Openlog to remove this 'emergency mode', but I don't have the required equipment (an AVR programmer), are there other solutions? Can I just put in weak pullup resistor?

Thanks

SPARKFUN
?Description: OpenLog is an open source data logger. Simple to use, simple to change. We wanted to create a serial logger that just worked. Power this device up and it will start logging any received serial data at 9600bps?
Datasheet (GITHUB)
?OpenLog is a simple serial logger based on the ATmega328 running at 16MHz. The ATmega328 should be able to talk to high capacity (larger than 2GB) SD cards. The whole purpose of this logger was to create a logger that just powered up and worked. OpenLog ships with a standard serial bootloader so you can load new firmware with a simple serial connection.?

I can?t get the darn thing to operate. I?m rather incompetent at some of this stuff . However, not just because of my incompetence, but also judging by the previous comments about the device, OpenLog is not as simple to get operating as stated.
PO?T

Got a couple of these, work exactly as advertised!
If anyone else is looking to modify the firmware and is unfamiliar with the workflow to get the serial bootloader working (like i was) then i can highly recommend Nate's walkthrough of his process here:
http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=142
(this took me heaps longer to find than it should have, and so i found lots of ways to not make it work in the meantime. Hopefully putting the link here saves someone else that pleasure...)

Wow this is really as close to plug and play as it gets. Not that I didn't have issues getting it together but once running, I could see just how functional it really is. Thanks to the turtorials, getting to the command set was straight forward enough. Auto file numbering, no special commands to open or close files, it simply does it. Power it up send it data power it down, open the file and there it is. It took me a bit to determine how I wanted to load it, but that was simply formatting serial preint commands. Very cool.Right on the mark with this product.

it is exactly what is written!! you have just to conect 3 wires. you dont have to write a single line of code in arduino. it is like a spy no the wires.

Just bought one of these and I'm stunned by how simple is to set up and use. Just wire TX, RX, Vcc and GND; power it up and start sending data through the USART/UART interface of your microcontroller. Just be sure to cross the RX and TX lines. That's it, you have a datalogger!

I haven't been able to get mine working. Filed an issue over at the github page (http://github.com/nseidle/OpenLog/issues#issue/48)
Essentially the problem appears to be with activating the SD card, though the light that's supposed to tell me it's having trouble reading the SD card isn't blinking.

I'm trying my new OpenLog, but in Hyperterminal I see
12>
Why don't start with
12<
????
I need the
New File Logging (default)
function.
Can you help me?

Hi Sparkfun!

What is the accuracy of the crystal oscillatory on the newest version of the openlog? Do you have the oscillator's datasheet? I'm working a version of the openlog with timestamps and I'm trying to calculate the maximum expected drift.

Thanks, Sima

Is there any way I can log straight from a sensor? I want a really small form factor so it fits in a shoe

What is the part number for the micro SD socket?

Very good product. I'd like to know if there is a file size limitation ? Thanks and best regards Francis

I'm trying to connect this to the venus gps module (https://www.sparkfun.com/products/11058) but the gps won't power on.

Venus Openlog GND GND VBAT Battery + V3.3 VCC GND Battery -

Any ideas why?

I've been trying to get this to work with the Fio v3 using SoftwareSerial, but I can't seem to receive data from the OpenLog. I want to leave the Fio's main Serial for debugging over USB, D2 and D3 are used for I2C, Serial1 is used for the attached XBee, so I chose SoftwareSerial on D7 and D8 (RX and TX, respectively, connected to TXO and RXI on the OpenLog, respectively). I chose D7 for the SoftwareSerial RX since I read somewhere that it is the only one able to be used for RX (besides D0, D1, D2, and D3, which I stated were already being used for other purposes). Still, I cannot seem to read data coming from OpenLog, particularly when I'm trying to send it commands while in Command Mode.

If other have gotten this to work, could you please let me know what you did? Thanks!

Is this in any way compatible with a bare attiny programmed in the arduino IDE?

Is the OpenLog capable of higher baud rates like 250 000 Baud? So the data transmission takes less time (it doesn't get data non stop). Another advantage of this baud rate is that it can generated perfectly out of a 16MHz resonator while 115200 can't.

FYI, you can also check my Open Source Voltage logger and Pressure & Temperature Logger projects that run on on my Scorpion Board. It uses log_fs a simple, but robust record-based file system for AT45D DataFlash that I'm quite proud of.

How much does this weigh?

I just bought an Openlog datalogger, and I using that to record RAW data form an NVS8C GPS module. Openlog works amazing, but I have an issue with the GPS, he needs to be told on each startup to go in raw mode. Would it be possible to make Openlog send a serial string on startup? Is as simple as adding a serial.print and a delay at the start of the loop? (I'm new to programming :roll: )

Thanks

I received my 2 of these today and they look like the picture here. Unfortunately, your schematic doesn't go with the picture. Schematic shows a DTR. On your picture and my 2 boards it shows GRN and BLK at the edge holes. Please post updated schematic or explain.

Hi all! 've got my OpenLog and it works. I'm trying to drive it with a uM-FPU V3.1. If I send data from FPU to RX pin it's all ok, Openlog creates LOGxxxxx.txt files corerctly, but if I try to go in command mode sending 3 ctrl-z followed by new and/or append (filename.txt) command OpenLog doesn't create that file but write the sent command on the LOGxxxxx.txt. Is there someone working with uM-FPU and OpenLog that can help me? thanks

I want to drive OpenLog from a 5V Arduino Pro Mini. The header is the OpenLog source file says "Input voltage on RX-I pin must not exceed 6V". The datasheet of atmega328p says max input voltage VCC+0.5V which is 3.8V given the 3.3V VCC. Can I drive OpenLog from a 5V MCU without a level shifter?

I am looking at the schematic, the atmega328p runs at 3.3V and 16Mhz. According to the atmega328p's datasheet this is outside the spec (13.33Mhz max at 3.3V). Am I missing something?

Can anyone tell me what the fastest write and refresh rates are? We are sending 40 Bytes 20 times a second at 115,200 Baud over serial and need to log the stream. Also, what is the largest log file it can create and store? Thank You.

Received the openlog connected it to a max232 chip for rs232 operation. It will log data fine at any baud rate. However when I try to talk to it with hyperterminal I get garbage output. It still will respond when I send a command but I get garbage back. I get the best results at 4800 baud, then it almost displays correctly. Any ideas?

Is the source code for Openlog not available?

This is hands down one of my favorite products. Plug it into the 6pin header of an Arduino Pro/Pro mini, put out a few serial.print commands and you have an instant data logger. Or if you have something that spits out serial data that you want to capture, just match the BAUD rates and wire it up to record!

Here is a tip. Use a comma to separate all of your sensor values. If you add a time stamp with millis(), you can graph your values with respect to time by importing the .TXT file as a comma separated value file to a spreadsheet program like excel.

Something like... void setup { Serial.println("Time, sensor1, sensor2"); // header } void loop { Serial.print(time); Serial.print(", "); Serial.print(value1); Serial.print(", "); Serial.println(value2); }

Then snag the .TXT off the flash card, change the extension to .csv, highlight your data and graph!

I am going to use the OpenLog to save NMEA sentences from a Lowrance Elite 5 fishfinder/chartplotter. The device has a cable with yellow (transmit), black (ground) and red (receive) wires. I will not be using the red cable. Would I solder the yellow wire to the RXI and the black to the Black? This unit will be portable which includes a 12V battery inside the pouch. I wire the +ve of the battery to the VCC and the -ve to the GND?

Since this will be used outdoors and on a boat (but within a Lowrance portable pouch) can anyone recommend an enclosure for the OpenLog?

Thanks for any help

This is a great design with one exception: I would like to know when the data was loged, so a battery powered RTC and the option to insert the time before or after a carrage return. I thought about doing it, the board is not much of a problem but a quick glance at the Arduino IDE looks like it has unneccicary complications and overall it is more of a project than I want to take on at the moment. This seems so useful that I am mentioning it to see if there is any interest. I would use thru hole connections based on the Ardino Pro Mini in so far as practical for the benifit of easy user mods to add specialized funcionality. If there is any interest in this product, please leave a reply.

I wanna connect OpenLog with Arduino Uno to save accelerometer readings. I m not familiar with the process. Can you give me very detailed instructions how to wire them and how to program them ? Thanks

hI I'im using new firmware V3.20 i'm flashing with atmel studio but there is a problem with Write offset command. i'm create a file create toto.txt and add text : write toto.txt <hello john my name is marc i send Two CR < >

but if i want modify txt "john" on offset '6 'of text i enter write toto.txt 6 <mik folowed by two CR < >

read toto.txt hello mik ame is marc

I think there is the < after the first CR in write offset kill the next caracteres strange

How is it possible that the Openlog device withstand voltages greater than 3,3v @RXI? I mean there is no voltage converter in the shematic and the atmega is powered with 3,3v.

Is there a way to make it "spit out" the contents of the memory over serial too? It would be cool if I could have it record servo positions then repeat the movements

This is truly a simple to use data logger. I hooked it up to a HTU21D Humidity Sensor Breakout and was logging temperature and humidity first try. Great job Sparkfun!!

Hello, could someone indicate me where portc is initialized? PC2 pin is connected to CD of microsd socket and I cannot locate the relevant code... I guess arduino ide has limited searching capabilities...I am new to arduino... Thank you a priori.

we have a problem!!! we are using 9600 speed for the RX/TX. but the program has some interrupts. So, we receive many wrong characters inside. It is impossible to stop the interrupts (zero crossing and triac control) during writing to open log. What can we do?

I use OpenLog to log data at remote locations for long periods of time – months. I have no ability to change cards on a regular basis. For my company, it would be useful if logger has a few of the log4net features like split log files and rotate log files based on file size, or rows. Is this something that you could do?

I am testing a bunch of OpenLogs now and so far they are working perfectly. My application, when in production, will be remote – the devices won’t be accessed from months – maybe even a year or two and will run continuously during that time. I need to deal with large file sizes and full cards. Is there any chance I can get a few programming enhancements – like a rotate log feature similar to log4net set from the config.txt file?

Basically we need a rotate log file function. Implementing the function would depend on if you can determine the TXT file size and know the remaining space on the card or not. I you don’t know the available space on the card, then we could use a “create a new log file after x writes” (or rows) function in conjunction with a “max number of log files” parameter. This way for example I could write 1000 rows in 10 files and then go back and start at file 1 again. If you know the TXT file size it could be a little more sophisticated.

Please let me know if this is possible and if I can help in any way.

Keep up the great work.

Love mine! Works super well with little/no fuss.

I added timestamp support to OpenLog because I needed it for my own project. If need one, check the codes from here: http://antibore.wordpress.com/2013/09/13/timestamp-support-for-openlog/

Gentlemen,

I am trying to log nema0183 directly from the gps unit to the openlog. Seems pretty straight forward with the advent of this dandy little Openlog unit. I have verified the outputs of two gps units with an ftdi 232 to usb board. Both units stream perfect sentences to the terminal screen. I am watching the 0-5v nema burst on the scope and verify that the open log blue led is active during each burst. BUT... my openlog file is full of ascii nonsense. i have discovered that 19200 is the minimum for proper nema sentence output to the terminal, unlike the 4800 nema spec. i have tried every baud rate, matching the openlog config to the gps setting without success.

Any suggestions would be a great help. Thanks!

How can I set the Date/Time so that the DT Stamp on the log file is (semi) accurate?

Hi, I have the following problem. I send data to the OpenLog device without a problem, I usually find a single file (LOG#####.TXT) but when I'm sending data for almost an hour I find multiple files instead of only one (as if I would restart my arduino).

I checked if it is a power failure, but I have found that the Arduino does not reset at any time. I have also monitored the output with a RS232 shifter device, but any errors appears. I also checked if I'm entering in command mode accidentally, but it isn't the case. Any idea? The behaviour is like a reboot in the OpenLog.

Thanks in advance for any help.

6 mA is the maximum current draw of the open log without considering the current consumption of the micro sd card ? I have seen generally a sd card takes 100-200 mA when reading/writing.

Has anybody used these to record I2C data from sensors without another micro controller in between?

Is the schematic broken? I'm getting a .pdf with a few misplaced symbols on it.

Is there any way to have a Mega write data to this and an xbee at the same time?

I have data incoming from an ArduIMU to the Mega, but I don't know how to get the Mega to write the data simultaneously to both the openlog and xbee.

This is working when using USB power, but not battery power. Setup:

5V Arduino's TX -> logic level shifter -> OpenLog's RX

OpenLog's TX -> resistor -> Arduino RX

Arduino's reset pin -> logic level shifter -> OpenLog's reset pin

The result is that, when the Arduino is powered off of USB, this logs fine. When it's powered off of a 11.1V LiPo battery (full charge) via the Arduino's barrel jack, the logger resets somewhat randomly about four times per second.

Can anyone see why this would happen?

For reference, the logic level shifter is the SparkFun BOB-08745.

Hello, we got an issue with Open Log, because before we bought it, we saw in the datasheet that it would consume less than 6mA ( in a forum at most 15mA). Yet once plug, Openlog with the SD card wouldn't boot unless we got at least 30mA on the power supply used to test(seems like Open log need a high current spike at boot)How to avoid that spike of current at booting? thank you. Adding a big capacitor is not helping. More modules were tested with same problem. we are using telephone line to power our PCB, and can't get more than 18mA on long line. also we can't add a local battery, nor external power supply.

I'm getting a stream of 1s back from the data logger over serial.

I'm using a 5V Arduino, powering the OpenLog off of its 5V pin, and sending serial over to it and getting serial back. When the TX from the Arduino is not connected to the RX on the OpenLog, the OpenLog reports "12<". However, when I connect the Arduino's TX pin to the OpenLog's RXI pin, I only getting "11111111...."

While the datasheet says that the RXI pin can take up to 6V, I notice that the schematic shows regulation of VCC down to 3.3V, while the RXI pin undergoes no translation and is connected directly to the ATMEGA. This makes me think that in fact a 5V TTL signal from the Arduino is too high and is causing the ATMEGA to result. Just a guess though.

Has anyone else seen this? The closest thing I found was unanswered (https://github.com/sparkfun/OpenLog/issues/138).

For reference, everything works correctly when I use a 3.3V FTDI.

Could I get the part number for the 16 MHz Resonator? I am replicating the circuit with the EN line of the regulator exposed and would like to use exactly the same parts for the first run. The Eagle BOM identifies it at Part XTAL-08900 but I can't seem to find this part anywhere on the web site. A digikey, Mouser, or manufacturer part number would be helpful. Thanks.

I wanted to build a simple tempertaure data logger with a Picaxe and temp sensor.Has anyone used this with a Picaxe processor? If so, some sample code sure would be appreciated to save me the time. Thanks.

I am using the open log to log weather and cosmic ray data once a minute. I have an Atmega 328 connected on the bread board to the open log for data logging, and to a FTDI header for programming. The open log log's data fine when I have the FTDI adaptor (DEV-09716) attached, but doesn't log anything when It isn't attached. I assume I have a hardware failure, and I forgot to connect something to the open log that the FTDI is connecting for me, but I checked and the TX and RX pins are connected properly, and so are GND and VCC. Right now my only guess is that the FTDI is putting more capacitance on the power supply that causes it to start working, but I haven't tested it yet. However when I measured the voltage W/ the FTDI adaptor both the TX and RX lines sat at 4.7 to 4.9V and W/O it was 3.3 for both of them. Can I please get some help?

For anyone pulling their hair out about updating the firmware, I thought I would add something that may be common knowledge, but it took me 4 hoursof searching through the Wiki resolved issues to find it.

If you are getting compile errors that say "expected constructor, destructor, or type conversion before "

Move the SdFat and SerialPort folders OUT OF the unzipped folders and directly into libraries. They cannot just be unziped into libraries without this move.

It now compile on Arduino IDE 1.02

Can I use this device to receive RS232 data stream from another device and store it on a micro SD card? I mean as simple as that? Do I need a Level shifter in order to use it?

Hello, I have mounted one empty Atmega328 in my own board to be sent data from a second MCU. How can I flash the last firmware into the 328? I have flashed 'something' able to create a new file in the SD, but I get junk characters when I try to write some data sent through Tx. i am using an ATMEL programmer to ISP the AtMega. Please, help. Thanks.

Great little piece of hardware - I was able to build one over the weekend using the firmware, schematic and other documentation linked on here. My only hardships came about from not setting the boot size fuses correctly. And I had to use an STK500 programmer for both the boot loader and the main firmware as I couldn't get the Arduino IDE to connect to the AVR (started with a bare-metal chip). I know you guys just did a write up on your open hardware business model, but thanks again for supporting the weekend hobbyist!

Hmmm... Been using these loggers for over two years. Latest batch will not allow me to update the firmware to my own, using the 'older' method. Looking at the OPENLog website it appears the bootloader has changed. The only instructions I can find for updating the latest version is to use Ardunio stuff. Since I have a fully tested and working hex file that I want to upload, I cannot use the new instructions. Anybody any idea on how to update the firmware (I have a hex file) with the latest (post March) bootloader? I've a nice little serial/TTL converter all ready and willing :-) P.S. I re-tested my 'old' method on an older OPENLog device and it works fine. Just not on these new suckers.

Openlog Power

So i have a arduino pro mini 3.3v, oled display ssd1306, rtc and openlog.. i left this running with two AAA batteries for a day, every 3 seconds i was sampling data and recording it to the txt file on the openlog.

openlog was able to record 4800 data rows in about 4 hours powered with the AAA batteries, after that 4 hours(pretty good) my arduino pro mini and display keeps working, also the rtc but it is not longer recording. with time the battery voltaje drops to around 2.8-2.6. and openlog stops writing to the sd card.

do you have any idea why? if everything else is working?

Is it possible to write multiple files with OpenLog, or is it limited to just one file? If multiple files are allowed, how would I go about doing that? I need one file to record GPS coordinates and altitude, and another file to record all of my other incoming data (temp, pressure, etc). Any suggestions?

Hi Nate, I'm just wondering whether (you think) your code for the OpenLog would work on a ATMEGA32u4 out of the box?? I'm keen on using a fair amount of your code as the CLI and epic datalogging abilities are very attractive, but I need to use a couple of I2C sensors and fit the whole thing in a very small, circular space. I've gone for the 32u4 because you sell it in a TQFP, and it has built in USB, so I may try something like keyboard log output or mass storage abilities...

Is there a setting to change that allows an OpenLog to properly read an inverted RS232 signal? The MaxBotix range finder (also sold by SparkFun), outputs the serial as 0-Vcc. Using PuTTY on my PC, I can easily read the MaxBotix range data. However, the OpenLog just produces a log file of gibberish characters. I am hoping to avoid having to implement this in hardware...

I'm slightly confused by the fact that using the provided wiring scheme (or a crossover board), the pin labeled "GND" on the OpenLog unit goes to the pin labeled "CTS" on the FTDI board. This is fine; I think we're assuming that the FTDI board is setting CTS low all the time. But I want to make sure that if I use another SparkFun serial gadget on the other side, namely the Razor 9-dof (which other than the CTX/RX switch has the same pinout as the FTDI unit), it's okay that the OpenLog board is getting its ground from CTS. Doesn't this wiring assume something about the behavior of CTS? Does it require CTS to be held low, and if I don't explicitly set CTS in firmware on the Razor 9-dof, does anyone know if it's set low by default?

Thanks!

Which firmware do the now-shipping OpenLogs come with? For arduino, are they 1.0 compatible or do they still require a manual firmware update?

Please is it possible to know the exact procedure to upload FW 3.0 to Openlog? I see many different methods around depending on FW version! 1) How to connect the pins to an Arduino board to upload FW (?) 1b) How to connect the pins to FTDI board to upload the FW 2) Which board to select in IDE 3) Which files to change in IDE folder (?) 4) Which code to upload depending on bootloader (original/fixed)

DID YOU KNOW? :-)

If you upload proper firmware to OpenLog, you can use it as a standalone digital logger without any hardware modification: TX and RX are indeed actually digital pins 0 and 1. :-)

Anyway breaking out an analog pin too would be fine.

Apart from this, I still can't get this cute thing working, and I can't decode the LEDs code to determine which is the error encountered by firmware, which creates files but does not fill them up with data and does not show any prompt.

While not strictly an OpenLog question, it does apply to my OpenLog file.

I logged data from a few different sensors during a balloon flight. Log file looks chunks look like this:

Time: 0:1:55.Date: 0/14/204 Fix: 1 quality: 2 Location: 745.1949N, 8851.7187W Speed (knots): 21.07 Angle: 12.39 Altitude: 9213.40 Satellites: 8 accelerations are x, y, z: 306 326 367 External Temperature: -28.9200000762C / -19.4080009460F. Humidity: 15.14% Temperature: 6.40 *C Pressure: 35965 Pa Altitude: 7930.44 meters Real altitude: 7948.06 meters

Log file contains a ton of these entries. How can I parse this information in to a spreadsheet for graphing? I'm stuck trying to figure out how to get everything into columns and formatted to be useable. I didn't think of this beforehand, or I would have altered the Arduino script to write it as a csv.

Thanks!

I did some quick&dirt test with the Openlog, but I'm confused: when I connecy the device with a FAT32 formatted 1gb card (formatted with specific SD formatter tool from Panasonic), one led lights up then turns off, then the blue led lights up and turn off, and so on alternatively, then all leds go off. Upon connecting, bith with Hyperterminal and Arduino IDE (serial monitor), I can't see any prompt, and nothing happens upon sending characters. When I disconnect the device and put the card in a reader, I see several files, but all of them are empty.

Which is the exact "LEDs sequence" at startup? How can i know what is going wrong?

FYI: I was getting:

avrdude.exe: stk500_getsync(): not in sync: resp=0x00

when I tried flasing latest firmware to some new OpenLog cards using FTDI breakout. I was able to work around this by using 115200 baud instead of 57600:

C:\openlog>avrdude.exe -p atmega328p -P COM6 -c stk500v1 -b 115200 -Cavrdude.conf -U flash:w:main.hex

The older cards seem to require 57600 the 10 new cards all required 115200. I didn't find this documented anywhere.

The example Arduino sketches link is broken, anywhere else to find an a sketch that has solid examples?

in almost all links of the product give 404 error

If you want to upgrade the firmware on this board with the latest version, you don't have to go through the hassle of installing a custom version of Arduino as suggested. The compiled hex file is included in the download. There is a great little program called XLoader (http://xloader.russemotto.com/) which you can use to download the firmware into the openlog. (No avrdude knowledge required)

Yep... the github posts above are dead, and need to be redirected.

Also, the wiki on the github is out of date. For flashing firmware it still talks about needing to hack the HardwareSerial.cpp file. After looking high and low for the new HardwareSerial, I finally found the correct instructions inside the OpenLog_v3.ino within the downloadable zip file. The instructions there point you at the Bill Greiman libraries needed to compile in Arduino... Once I figured that out, everything worked fine.

Tom

Looks like the github links above need updating... for example, I believe the home page should be:

https://github.com/sparkfun/OpenLog

If OpenLog firmware is opensource... why is it distributed in unreadable .cpp.hex format? How can I upload my own firmware to OpenLog in such a way it can work in standalone mode without needing another ATMEGA328 mounted on an arduino board?

Being based on same chip of Arduino, can't this device be used in standalone mode to record from digital/analog pins rathe than serial port? Does it write data to files together with data acquisition time? Does it require an external RTC?

Specs say you can use 16 character filenames such as 123 ABCDEFGH.TXT, which is just fine, but Datasheet pages say you can only use 8-dot-3 names. Can someone clarify? Thanks. :)

18 mA current!? I'm working on a very low power logger and am planning to use this logger. I wanted to check the current draw and I am seeing it settle at a fairly large 18 mA (3 times larger than the "worst case" in the datasheet. Am I missing something? I'm hooking it up with a 3.3v source and putting my multimeter between the 3.3v and Vcc. The only other pin I have connected is BLK to ground. I have an SD card in and I am getting the single blue LED flash. I've also tested it with an FTDI Basic and it seems to be working fine - just drawing more than the expected current

Hello,

I get an OpenLog with firmware v1.51 as I remmeber. I have a standard FTDI cable.

I downloaded newer firmware through the git repository. I can upgrade sucessfully to any firmware version. I Only have Rx-Tx wires with Vcc-GND. I power up openlog whild pressing enter with: avrdude -p atmega328p -P COM2 -c stk500v1 -b 57600 -Cavrdude.conf -U flash:w:main.hex

It's programming without error. However, open log is only showint one 1 at hyperterm when starting. I do not have anymore 12>.

What's going on ? any ideas ?

Hello, I try to upgrade to v2.51. I use Arduino 0022, compile OpenLog_v2 and I have no error compiling. When I upload the code I think the openlog doens't respond and I got the error: avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51 In normal situation the openlog doens't work. I connect it to PC, STAT2LED blinks one time and I receive in in terminal "1"... It's possible that tx is dead?? Thanks

I wish there was an SPI version.

Great section "i just want it to work" and it does.
I sent tech support a note suggesting that the output of the 3.3 volt regulator be available via a pin on the board. Let's hope for the next revision.

I am extremely frustrated with this board. I bought it some time ago, but only recently had the need to use it. If it had worked it would have really helped me solve an important problem. However, instead, I spent the entire evening trying to debug this thing. The short version is that my board must have an older software revision because, try as I might, I can't get it to come up in logging mode and log data (yes, I even tried the tie RXI to ground and power up trick, with no luck.). It always power up in command mode. Then, it took me several house of fruitlessly trying to use a CONFIG.TXT file before I figure out that my version must not support this, either. But, even here I'm only guessing because, even after I hooked it up to a serial adapter, I can't seem to find a way to put it back into logging mode, nor can I even find a command that will tell me what version of software my board is running (did the designer forget to add these most basic features to the software...?) Argh... I suppose my only option is to blindly update the software but, two things, I don't have the required FTDI Basic board. Geez, this just keeps getting better and better.

I set the config system mode to 2,my Hyperterminal start with 12>,but when I enter 'new a.txt' ,nothing has happen,why can't I creat a new a.txt .

why my command is no use?

I'm trying to find or make something that will log serial data out of an controller. The controller will output serial data, but needs to be asked to send it. I've looked through all the documentation but can't find the answer anywhere...

Can the OpenLog send a command to trigger some data? As an example, I'd want to send 02 0A 41 01 00 02 69 01 00 69 02 00 03 19 01 as a hex string which should then give back something like 02 03 40 01 21 41 01 02 16 03 5A.

I then would need to check the last few bytes to see if it's an error and if not, store the data from some bytes further back in the string.

If I haven't asked in the right place or you need some clarification, please shout :)

I Have loaded Version 2 in my new open log hardware and on power up i am getting 12< but after that i am logging data with 9600 baud rate and i am unable to log it and not getting echo too.
Please help me what should be the problem?
Thanks
Priyank Patel.

Still missing characters when trying to send 8K/sec at 115kbaud. After a year of this problem it's still not resolved? Using trial and error I've found some delays that seem to work. This took hours of experimenting to resolve. Great I thought! Then I tried a different (faster) SD card. I'm back to square one. It misses 10-500 characters in a row about ever 1000. Which firmware will resolve this? Is there any way to work around it? If I knew when it was about to miss, I would wait. But there seems to be no pattern it's different every time. Please help!

Got it to work kinda by delaying 30ms every 600 bytes using Serial.write. Trial and error. This is about 7K/sec. Usually it'll go 1-2GB before it misses a single byte, then it misses 100+. That's the best I can do. Only a little bit better then 57600 baud in theory. Which I have not tried. For a short while I can write at 8K/sec. Keep in mind I'm using an old slow SD card.

This is related to a delay allocating the next cluster from the FAT. How can we work around it?

I could not get 57600 to work. But it wouldn't be fast enough for my application anyway, so I stopped trying. Instead at 115 kbaud this works for awhile:
delayMicroseconds(80)
I'm happy with that EXCEPT...
About every 60-100K the data is corrupted. 10 files are created. Normally the blue light appears solid, instead it flashes slowly alternating with the yellow light. This is not acceptable. Even using a delay of 800 it happens less often. This is very slow.
Please help!

Using this to test:
https://github.com/nseidle/OpenLog/tree/master/OpenLog_Test_Sketch
It drops 40-80 consecutive characters
every 100 lines or so at 115kbaud.
What good is this?
If it consistently fails?
Am I doing something wrong?
Can I add a delay to cure it?

Can we edit files on this from an arduino? I was going to try and use this as a hard drive with the arduino pro mini.

I ovewrwrite the program in the microcontroller chip. How do I restore it. I want the old program back. I am using SPI programming method by codeVision software

Has anyone besides me noticed the 3M logo on the slot?

The GitHub has ver 2 firmware sources available.
Are the ver 1.61 firmware sources available ??
thanks

Recently got some of these, and found with an ISP that the efuse was invalid. The brownout bits were 000. That is listed as "reserved" in the datasheet, wonder what it does? I think they are supposed to be 101, or "5". Was it shipped that way I assume? By the way, hooking a pod to openLog is a bit of a pain...

Is there a chance that you'll carry just the bare ATmega preprogrammed with the OpenLog firmware?

How many channels can this thing do?
Can I simultaneously log data from 3,4,5 etc inputs?

How does the soldering work on a board like this which has components to be mounted to both sides? can you still use the hot plate method?

I need MMC support to run project in Proteus (SD/SDHC doesn't work with it)
And how i can compile this project without arduino IDE?

I am having trouble using the openLog with NewSoftSerial on an Arduino Uno. It seems to log alright and I can get the openLog into command mode but when I have openLog return serial data (with commands like ls or ?) there are random characters missing. For example ? returns:
OpenLog v2.5
Basic commands:
new : Creates
append : Appends text to end of . The texti edfo h ATi temadi o cod iihb edn tlz(SI 6
m drcoy rae ietr ald
...
I have rx set to pin 6 and tx set to pin 7. GRN connected to reset on the Arduino. Otherwise I have GND and VCC to 5V connected. Changing the baud rate does not improve things.
Any advice? Is NewSoftSerial not capable to receive the serial data correctly or do I need additional settings?
Thanks in advance.

EXCUSE ME IF I HAVE DONE WRONG UNDERSTANDING.
WHAT I WANTED TO SAY MY QUESTION IS:
I would like to directly connect a magnetic head (read magnetic tracks) with openlog and read the data without basic module, with only the console log and a magnetic head, I hope you understand me thank you for your help

I'm having problems dropping my OpenLogs into command mode from my Arduino. The Arduino is connected to a GPS so it knows the time and date; i would like OpenLog to name a new file with this information. I have tried multiple ways of sending character "26," BYTE, BIN, HEX, OCT, DEC, line feeds between each send, no line feeds... maybe i'm just not doing something right; but does anyone know how I can drop it into command mode? Also, is it capable of logging to two files, if it enters command mode and alternates between these two files? does anyone know how long it takes to switch between two files?
Any and all responses appreciated.

SALVATION
I would buy a OPENLOG FOR TRANSFERRING DATA AS EX: 2235687611234567 / / 2345678987654324567 WITH OPENLOG just as with the example project on sensor Sparkfun but just what I want to do the same thing c'es but with a magnetic head that I veus Use with openlog, I am not very strong in electronics, can you help if possible thanks

SALUT
JE VOUDRAIT ACHETER UN OPENLOG
POUR TRANSFERER LES DONNEES COMME EX:2235687611234567//2345678987654324567 AVEC LE OPENLOG UNIQUEMENT ET LIRE DONNé simplement comme avec l'exaple project sensor sur sparkfun
mais juste ce que je veut faire c'es la meme chose sauf que c'est avec une tete magnetic que je veus utiliser avec le openlog;quelq'un peut aider ?

This is somewhat new to me so excuse by basic questions. I have a system on my airplane that displays all the engine temps and pressures but does not record data. It does have a serial data out line so I bought an OpenLog, made up a 5 volt power supply using a 7805 voltage regulator, and wired it up. I then formatted the card using my laptop, plugged it into OpenLog, and turned on the electrical system and data display system for a few minutes. Then I took the card to my laptop to see what had been generated.
OpenLog made a CONFIG.TXT file and a data file named LOGO0015.TXT. The CONFIG file is fine and reads 9600, 26, 3, 0, but the LOGO file is not text, it's lots of funny characters.
So how do I convert everything to text I can parse into a spreadsheet?
Here is what the data looks like:
úþþþþþ.þþžÆþþnþþÖ 1 1žžîüþþþþþþþ þþþ2 þþþþþþþþþþþþþþ²þ®þ²þÒþº

I ordered two Openlogs. One came with firmware v2.5 and supports the 'reset'-command in commandmode. The other (as I figured out after some hours of testing around and cursing (g) was only firmware v2.41 which doesn't support resetting.
I tried to compile v2.5 using the latest Arduino-IDE and following the steps explained on the datasheet precisely.
At the first try my OpenLog suddenly only logged chinese characters (which were definitively not "thrown" at him). Now after a reboot of my computer v2.5 won't even compile because some error in the 'special' HardwareSerial.cpp supplied for programming v2 onto OpenLog using the Arduino-IDE.
I then tried to upload the latest .hex file using avrdude. But the latest .hex-file on GitHub is v2.41. Could you please make a .hex for v2.5 available? Thanks in advance.

When the stock will be available?

Is there a way to start logging to the OpenLog based on an external trigger? if yes, how?

Hi,
Does anyone encounter this error while flashing firmware? Thanks!

Bryan

C:\openlog>avrdude.exe -p atmega328p -P COM6 -c stk500v1 -b 57600 -Cavrdude.conf
-U flash:w:main.hex
avrdude.exe: stk500_getsync(): not in sync: resp=0x00
avrdude.exe: stk500_disable(): protocol error, expect=0x14, resp=0x51

avrdude.exe done. Thank you.

Hi,
Anyone encountered this problem while flashing the firmware? Thanks!

Bryan

C:\openlog>avrdude.exe -p atmega328p -P COM6 -c stk500v1 -b 57600 -Cavrdude.conf
-U flash:w:main.hex
avrdude.exe: stk500_getsync(): not in sync: resp=0x00
avrdude.exe: stk500_disable(): protocol error, expect=0x14, resp=0x51

avrdude.exe done. Thank you.

what oscillator is on the board. It's tiny! Can I get a part number?

I'm not sure if mine is bad or not. I plug it into power, and the serial terminal receives a 1 repeated every second with a sdhc card plugged in. When I unplug the sdhc card, the character changes to the 'n' and when a character is typed into the terminal (putty) it changes to the 'u'. I think I may have broken it, however, the fact that the output changes when I modify conditions makes me think that it is still functional.
I have attempted to re-flash it using the command prompt utility, however no luck.
any help?
-Alex

Hello,
I got one openlog, but I currently am unable to get it to work. When I power it up, it outputs the 1 over an FTDI converter and then it stops. Blue LED will blink 3 times after a while (= problems initializing the card). So far so good. I tried to update the firmware to the newest 2.41 version, as I'm using a 4GB SDHC (Toshiba) card (formatted FAT16 and FAT32, both didn't work). I've downloaded the newest firmware from the github and tried to bootload it. The bootloading seems to work as V1 can be bootloaded without any problems, but when loading V2 avrdude reports me an error. It starts programming 32768 bytes (which is maximum of the ATMega) and during verifing I'm getting the error:
avrdude.exe: verification error, first mismatch at byte 0x7800
0x32 != 0x0c
Strange is also, that the file sizes between V1 and V2 are very different. The current V1 hex file has 69.108 bytes and the V2 hex file (filename: OpenLog_v2.cpp.hex) has 247.589 Bytes?!
Anyone any ideas?
Greetings from Germany,
Mike

I'm having a huge problem with one on firmware 1.6. It just keeps giving me 'cannot create config file' and 'too many logs' even with a clean formattted, SMALL card (16 MB). SOme other cards simply cause it to send a series of 1's.

I was wondering if there is any way to set this up to transmit data on startup.
My project idea is a gps logger, but it looks like the gps has to be initialized first. I imagine it would be easy enough to edit the firmware but only the hex file is posted.
Thanks

Usefull thing!

Hi - I am trying to use this board along with a the 9DOF Serial AHRS board. The 9DOF is putting out what I expect over the serial port. When I connect the OpenLog, the blue light blinks and it appears to try to read, but I get mostly glitchy output at 57600. Any suggestions? (sample output below). OpenLog reads the CONFIG file correctly and makes a new file for the data but it's glitchy... (though it looks OK when I read the serial port not through OpenLogger - gives good 9DOF outputs in Arduino Serial Monitor).
372
38SH¯416
·j
5SH®Ÿ≤j
!ANîjÇ.0L r72 r∫4C·!ANG:Krí2,1.78,1.sLC·!AÍÈ-1.05,3.0&˘&)Ój
!ANG:K& íbìâ.b˛&)Çj
!ANîjíríÆb~M Vb˛&)éj
!ANîjNräÇ,6.79,4.73
!ANGßIríÇbÓr≤Çb5.12

Can I use this with 9 Degrees of Freedom - Sensor Stick
sku: SEN-10321?

It says that the chip has:
"Configurable baud rates (2400 to 115200bps)"
but
"Doesn't drop characters even at full-blast 57600bp"
So what is the maximum baud rate that this chip can take without dropping characters? Has anyone tested this chip and found the the actual max baud rate and storage capacity?

Just tested my OpenLog device. Works great at first step but pushing it up a little makes it losing data quickly...
Sending a continuous data flow to the OpenLog at 9600bps is ok. But it starts loosing some bytes at 19200bps.
I am quite disappointed as the description & datasheet pages say that it's working at 57600bps and even at 115200bps! :-(

I need to transmit the data stored in a SD card that is inside a datalogger Openlog with xbee, How can I read the data remotely through openlog?

How is long term (months) stability at low/moderate logging speed? I see some comments having problem with this.
/

I bought one of these.. but cannot get it to work.
I dont have the FDTI cable, so I cant use any of the commands. I'm just sending text to the serial monitor, is it just supposed log? or is anything additional that needs to be done? as far as wiring the rx on openlog should be connected to the tx on the arduino?

How easy is it to wire this up to the SD card socket break out board? http://www.sparkfun.com/products/204
A royal PITA? I'd rather not have to get the MicroSD socket BOB, too.

Can I flash version firmware 2,41 while connected to my Seeduino, or will this only work with an FTDI board
regards, Garry

Sorry, I forgot!, Merry christmas.

Been using OpenLog for 3 days now. It's exactly what I was looking for. Works like a charm (once I understood how to enter command mode ;-)). I am using Kubuntu with a Seeeduino V328.
This is an excellent example of a product which simply works, period. Thanks Nate.
Regards, Garry

Hardware keylogger, anyone?

I just hooked up a OPenLog to my Arduino Duemilano .
I tried the OpenLogTest.pde file. The led on the OpenLog indicates it is getting data but I see no files being created.
I even created a CONFIG.TXT file -- It did not create one.
I am using a 2GB card. I did not format it , but my PC reads it just fine...
Any ideas?
Could I have overwritten the Flash, if it was connected when I downloaded a sketch to my duemilano. It seems to use the same I/O pins??
Thanks

Bought the OpenLog a few months ago and left it in a drawer. I finally found the time to try it out this week and I cannot get it to work to save my life...
Basically the green LED blinks three times indicating no SD card initialized constantly. I have tried several different SDs (SanDisk @2G, PNY @2G and 4G), made a point of formatting them to FAT16 (using a number of different methods), all to no avail. I reflashed the OpenLog to the latest firmware, now I can see a "1 error card.init" on power up.
This almost appears to be a hardware issue - has anybody else had similar issues?

Has anybody used this for over a few days without stopping? I have found a problem that after about 10 hours or 5 mb of data some numbers start to be replaced by letters. The replacements are always the same eg. 0 turns into p.
Any thoughts on this?

I am having an issue with my openlog, it stops logging after about 15 to 20 minutes even though the blue status light still blinks. I am using a 2GB card, and have it hooked up to a Lilypad. Does anyone have an idea of what could be happening? It did seem to work longer on the first day that I used it. Any help would be much appreciated.
Thanks, Julio.

Hi guys,
I'm having some troubles with my OpenLog.
Here's the setup:
OpenLog FW:2.21
PC -> FTDI basic breakout -> OpenLog.
2Go micro-SD formated FAT32, with only 2 files : config.txt and settings.txt (406 bytes long).
I open a terminal app (TeraTerm) on COM3, 9600,8N1.
I can read both files with the read command.
But, if I first try to get the size of a file (ex. "size settings.txt"), and then try to read the same file (with or without any parameter), it ends with an error to open the file... ;(
Then, I have to switch off and on the OpenLog to be able to read a file again... the "init" command doesn't change anything.
Any idea ?
thanks.
P.S: I tried to restore FW 1.61, but each time avrdude says everything is ok, but I get the blue led dimmed (like pwm'ed at ~20%), and no communication at all ...

One problem with my Logging V1.61:
I can not use any set Command. I sent:
"set New File Number". And it replied:
System Configuration
Current boot mode: Command
Current escape character and amount: 26 x 3
Change to:
1) New file logging
2) Append file logging
3) Command prompt
4) Reset new file number
5) New escape character
6) Number of escape characters
x) Exit

I've tried with "set 4)", "set 4) Reset new file number" but nothing work. Please help me, Thanks!

Is there a way to use an RTC with this device simply to get a time and date stamp for free running logging operations? Has someone done this?
Thanks,
KB

This works great!!! -- but is there a way to stop the blue LED (STAT1, to the right of the 'g' in "openLog" written on the board)?
It keeps flashing, perhaps to indicate serial communication between my arduino board and the openLog.
I want to do day-long logging of biometric signals (initially at a high data rate, to figure out what is going on, then hopefully at a lower rate) - and I wonder how much of the battery gets used up by the blue LED flashing non-stop.
Right now I am just using an Arduino mini, an openLog, and a 3-axis accelerometer, and logging x,y,z at 4Hz draws 10mA from the battery!
Thanks,
PLM.

Different question concerning the latest 2.2 firmware:
I just tried to use that firmware trying to solve my problem mentioned earlier and found something weird: Although the baud rate is set to 9600 (no config.txt on the card, menu output) I have to connect to the OpenLog with 19200 bps...

Hi, great stuff, already started to assemble five Razor 9DOF+OpenLog for my experiments ;-)
However, I struggle to get this combination working and hope somebody is able to help me with this. I can connect to the OpenLog with the FTDI cable but "disk" only returns a "error reading disk info" and recording fails as no logfiles are created.
I'm using the 1.61 firmware with a 2GB card from SanDisk.
I already had to format the card once with a FAT 16 filesystem and also tried to repartition under Linux (mkfs.msdos)
Any ideas what could cause these troubles?
Thanks!

The v2 code is just awesome! Now I have the ability to eliminate the Arduino that I had use to sort through the data stream. Question: If I were to add some code that would analyze the data, and choose what to log. Which loop would that go in? (I am not a strong coder)

Updated to V2.1 w/ Arduino 00118 after having the repeated 12< problem. The logger creates new files, and can be interfaced over the serial port, but the log files are always empty. Connecting to an Arduino Pro Mini 328 5V 16Hz.
Also, the reference to how to upgrade the firmware should be taken off, I only figured out that flashing the Open Log was no longer necessary when it was discovered that there is no main.hex file anywhere to be found...
I still hope that I can get my Open Log to work!

What is the status on the FAT32 support? I have noticed that tz has created something, do I flash the openlog as if I were updating the firmware? Possible link to the most up to date version of tz's FAT32 SDHC code?
Thanks

Can the Atmega328p take a 5V signal on its serial in, or is it only 3.3V? I don't want to fry this little logger...

Hi, I need to record rs232 serial data from a pc then play it back through a servo controller. I figure this will record the data but can I play it back directly into my servo controller. Normally the PC goes straight to the controller card but I want to eliminate the pc in the field and just play back a recorded sequence from this card. Anyone know if this would work? Or a better idea?
Thanks

Hi there,
the OpenLog makes my current project a lot easier than expected, but there is one thing that could be optimized, maybe you know more:
Is there any possibility to reduce the bootup time of the OpenLog, for example by bypassing the bootloader or something.
I only want to read from the module, ideally as fast as possible after startup.
What do you think?
Martin

Alright, finally got mine to work with the bus pirate. Here is what I found out:
to format FAT16 with dos in xp:
c:>format e: /fs:fat
*where e: was my removable uSD drive
fat can only handle up to 4GB, i was able to try both 2GB and 8GB. I could not figure out how to partition the 8GB with XP and could not format the 8GB. The 2GB worked fine.
I was not able to get to command mode with the bus pirate. Ctrl+z or decimal equivalent 26 or 0x1A three times only result in garbage output. I will try directly connecting to the rs232 of my pc later to see if this gives me different results. I'm a little sick of decrypting hex input and output from bus pirate.

Gentlemen!
I am trying (unsuccessfully) to flash the firmware in my OpenLog using usbtiny.
I have connected MISO, MOSI SCK, VCC, and GND pins of OpenLog to corresponding pins of the programming cable. I am using this avrdude syntax:
avrdude -c usbtiny -p atmega328p -P usb -F -U flash:w:main.hex:i
And getting this:

avrdude: initialization failed, rc=-1
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x000000
avrdude: Yikes! Invalid device signature.
avrdude: Expected signature for ATMEGA328P is 1E 95 0F
avrdude: NOTE: FLASH memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude done. Thank you.

I have noticed that we have 1k resistor on SCK pin (17). Is it the reason? will simply removing it fix the problem? or should I somehow remove the bootloader first?
Thank you,
James
N.B. I can program stand alone AVR's...

I've got a wiring question about the openlog unit I just ordered and received. I currently have a daq unit set up to receive data from a few instruments and send it on request as a serial data stream via a usb connection on a com port I manage with a basic hyperterminal-like program (only in windows 7).
What I'd like to do, is initiate the daq unit's serial data stream from the instruments by laptop and have openlog record the data to SD while I leave the whole unit unattended for a couple days.
what I'm wondering is if I can just clip the signal wire between the daq unit and the usb terminal and solder the open log in at that point and let it run (assuming I've wired up the vcc and gnd too).
Will that work? also, will my data "flow through" the openlog and be able to still be accessed by usb too? I'd rather not have to interface with the openlog if I don't have to and I have very little experience with electronics or programing.
thanks for your help,
Justin

I'm using a FTDI 3.3v (DEV-09717) cable connected to my OpenLog. Using teraterm on COM10 I can make a connection to the device. all is good.
to upgrade the firmware I'm using the follow cmd:
avrdude.exe -p atmega328p -P COM10 -c stk500v1 -b 57600 -Cavrdude.conf -U flash:w:main.hex
and get this response:
avrdude.exe: ser_open(): can't open device "COM10": The system cannot find the file specified.
I have put libusb0.dll in the system32 directory.
is the problem that arvdude can't handle high number com ports?
thank you
gek

Have done, thanks

Hi,
We're using a few of these to log RFID via an Arduino Nano - in most cases this is working great, but a couple of the OpenLogs seem to have fallen into an unresponsive state - no serial response, no LEDs, no reset response. Connections look fine, no apparent damage on board. Any thoughts?
Rob

Thanks Nate, 4800 baud works well. I had a few teething problems with avrdude and finally found that I needed to get a copy of libusb0.dll and add it to the Win32 folder. After that it all worked as your upgrade firmware sheet said. Many thanks a great result for me. John W

Hi,
I just received my openLog. Unfortunately, I see only empty files or files with 32kb of giberish (as seen in emacs). I am using 2Gb microSD card from Samsung. At the power-up the first led flashes and then he second flashes and stays on. I did verify that the card is FAT16 formated.
I do not have FTDI Basic so I can't really debug with a terminal.
Question: is the default to start logging data or to wait for a command from terminal?

My Openlog works well when connected via a FTDI Basic to Hyperterminal at 9600 baud. However I want to connect to TTL feeds at 4800 baud. Can anyone provide the firmware update that will (say) replace the currently available 2400 baud option with 4800 ? Thanks

Hi there.
Bought one time ago but I would need the new "read" command to avoid removing the card everytime.
I found the source code on the site but...
can someone help me in the whole process? compiling and bootloading?
No way to have the hex files ready to be bootloaded?
Forgive me. I a beginner, never used winavr or whatever.
Any help would be appreciated.
Many thanks in advance.

I'm having trouble withe the OpenLog dropping data. I've seen the problem at 57600 and 115200 baud. Here's an example of the problem. I'm trying to log the sensor data for my AVC entry. The first column is the data point number and the second column is the time in ms.
2634, 134048, 80, 309.7, 512, 0, 0, 39.98120880, -105.24263000, 11.1460, 0.3200, 2.4900, 0.0000, 94.6021, 3
2635, 134098, 16, 310.3, 510, 0, 0, 39.98120880, -105.24263000, 11.090, 39.98121261, -105.24263000, 11.0720, 0.3500, 2.0600, 0.0000, 94.6038, 3
2641, 134398, 0, 309.7, 522, 0, 0, 39.98121261, -105.24263000, 11.0720, 0.3500, 2.0600, 0.0000, 94.6038, 3
2642, 134448, 0, 309.7, 510, 0, 0, 39.98121261, -105.24263000, 11.0720, 0.3500, 2.0600, 0.0000, 94.6038, 3
Sorry for the long lines, but you can see that data points between #2635-#2641 are missing and the dropout takes about 300 ms. This test was done at 115200, but I see the same thing at 57600. These sorts of dropouts appear in my data stream about every 0.5 to 1 second.
I've got the OpenLog hooked up to the Serial Tx of an Arduino Mega. If I look at the data stream via USB, it's rock solid. No dropouts.
Any ideas?

I finaly got arround to tinkering with this. I connected it to my openlog with a 5v regulator and heat sink to power the vcc on both and so far the results are amazing. It was a bit of a challange to build a box but I have replaced a serial printer on a phone system with the openlog a 2GB SD card this RS232 Shifter SMD, project case. I reccomend a 5v power regulator and heat sink even if you have a 5v power supply because a quick test of any power supply on a multimeter will show you they all lie and with the high side of the openlog at 5v there's just no point risking it all for a 2 dollar part.
If I could change anything about the openlog I would give it the option to write/read it's settings to the flash card so they could be backed up, would not constantly write flash for file name incraments, could switched easily by swaping cards with two different pourposes, could easily be reset if bodrate etc was forgotten you could just format the sd card.

Can the something like the Arduino read the file from this card and be able to transmit the information over an xbee to another xbee to store on another open log device?

I've been testing these modules prior to installing in some equipment, ready to log long term on a beta product.
Apart from teething trouble at the start (the instructions for flashing are now out of date), I have managed to recompile and flash the firmware correctly. I have changed the code to 115200 in all cases.
I am using a 2gig SD card (not SDHC). Amongst other testing, I tested the open log by filling the card with 1.6gig of data (a 1.6gig file), then inserted the card into the openlog device. It fails to log with an "error writing to file" always. If I reformat and do not put 1.6gb data into the card, it always works correctly, it can log data.
My query is, has the openlog been tested to capacity of a 2gig SD card. Has anyone actually managed to fill a 2 gig card without errors?
I'm wondering at what point the logger starts to fail?
Any ideas?

For the adventurous:
http://github.com/tz1/hyperlog
Works at 57600 default. Other baud rates by adding a 1-line (with line ending) HYPERLOG.CFG file containing the baud rate, e.g. "115200".
Boots and starts logging. Break flushes, plus flush timer.

Hi
How do I connect this to Arduino Duemilanove?
for mini:
GRN: Reset pin and connects to the GRN pin on the Arduino Pro Mini. Pulling this line low will reset the ATmega328. Because there is a capacitor on this line, holding this line low will not keep OpenLog in reset.
RXI: Serial input into OpenLog.
TXO: Serial output from OpenLog.
VCC: 3.3V to 12V input.
GND: Ground
BLK: This pin is connected to GND. Connect this pin to BLK on the Arduino Pro Mini.
Thanks

I was wondering if anyone ran into the issue of a microSD card not support SPI mode?
I was reading that this is optional for microSD cards is this true?

The addition of a real-time clock would make this perfect for some apps I have in mind. Even if the clock's only function is to put a timestamp on the log files.

http://harleyhacking.blogspot.com/2010/01/fat32lib-01-zap-your-card-edition.html
Alpha quality, but for really early adopters...
Flashable firmware, source with build-able library and sdhc driver. FAT32 only with 8.3 names only, but 11k for the lib and sd/sdhc driver.
Direct link: http://www.zdez.org/fat32lib-0.1.zip

I successfully fed data into the logger and it works as expected.
Is it a "must" to read out the logger with a separate FTDI breakout or is there a way of using the Arduino for that? I can't find a hint or even a tutorial.

1) Which one is STAT1 LED and STAT2 LED? I just wonder it be better if different color coding is used or label on PCB.
2) I just send out serial character "Hello" from Atmel to OpenLog. What should I expect as output? Will I see a text file if I read SD card from PC?
Thanks!