I just bought two of these and I have to say I'm QUITE disappointed to find that they work exactly the way they are named. What I mean by this is that I expected them to keep a device awake as long as they are accelerating. However, what they actually do is wake up for a pre-set period of time when accelerated, and then remove power after this time has passed (whether they are still moving or not). They then ignore any movement for a few seconds. This is very inconvenient for a project like mine (which I'll bet is similar to what lots of folks would like to use these for): a remote control that sleeps until you pick it up, and stays powered until you put it down. The only workaround -if you can call it that!- is to guess how long the remote will be in use, and set the off-delay a little longer than that. Which in my view defeats much of the purpose of the board! If anyone has done any work on the firmware to fix this, I'd sure appreciate hearing about it. Thanks!

I just bought the wake-on-shake and, I do have the exact same comment to the first person in this post: I would like to have "a remote control that sleeps until you pick it up, and stays powered until you put it down". and of course, it does not do this, " what they actually do is wake up for a preset period of time when accelerated, and then remove power after this time has passed". (as suggested in the following post, the solution proposed to include this in my main coding body is not very elegant!!) Would it be possible to have a full coding example that implement the "AWAKE flag" byte check to leave my projet "on" untill that are no movement (and not based on a preset time)?
There is a nice person that did this a portion of this solution in this post, however, it is incomplete and not for Arduino developers? Thank in advance.

Does anyone know the amp limit of this? I see a voltage range but no amps.

I would like to see an updated version of this board with a built in charger.

Hi How can i change the polarity of wake up signal So the wake up signal will be '0' instead of '1' ?

I have never coded, never done any of this so I am a complete newbie and don’t even know If I am capable of doing the sample project they show. Here’s my situation: I am working on a project that needs to turn off when tilted up beyond 90 degrees and then turn on when tilted down past 90 degrees. Make sense? The motion of a wrist going up for off and down for on. Can this be programmed for that? If so, is there code already available somewhere for that?i say that like I know how to code haha. Please help, experts!

I can't find any information about what MOSFET that is used for this design, anyone knows?

Does spark fun sell something like wake on shake but is "wake on timer" where instead of an accelerometer being the trigger it is a timer alarm?

AWESOME!!! We can now make all of our elecronics behave like older TV sets! Just bang the top of the device and it starts working! :)

I am sure nobody in this group would have a problem figuring it out, but the manual says it communicates at 2400 bps. In reality it seems to be 9600 bps.

It is working great and I am looking forward to using it. Thanks, Mike, for saving me a lot of programming that I was planning to do.

When the Wake-On-Shake detects movement, it will power the load. The WAKE pin can be connected to an I/O pin to keep the Wake-On-Shake on longer. If you keep the WAKE pin HIGH in the code, the load will be held high until the WAKE pin is pulled LOW.

For a quick test, I added a LiPo battery to the board and tried powering a RedBoard and used part of the example code in the Uncertain 7 Cube tutorial:

#define ledPin 13  // Most Arduino boards have an on-board LED on this pin
#define wakePin 9 // Wake on Shake "Keep Awake" Pin

void setup(){ // Set up code called once on start-up 
    // define pin modes
    pinMode(ledPin, OUTPUT);
    /*if pin is not connected, the Wake-on-Shake will 
    automatically turn the load off after a certain 
    period of time (around 5 seconds)*/
    pinMode(wakePin, OUTPUT); 

    digitalWrite(wakePin, HIGH); // Tell the Wake-on-Shake that we're still awake
    }

void loop()
{
  for(int i=0; i<15; i++){ //run 15 times to test 
  digitalWrite(ledPin, HIGH); //blink RedBoard's LED
  delay(500);
  digitalWrite(ledPin, LOW);
  delay(50);
  }
  digitalWrite(wakePin, LOW); // Let the Wake-On-Shake module know it's okay to turn off
}

I like the black JST, do you have a part# for that?

To configure the settings of the Wake on Shake, you must power the Wake on Shake with a LiPo or some other power source. A 3.3V FTDI connected will not provide power because the 3.3V pin is not connected. The engineer that designed it this way so that two power sources would not conflict with each other. Your serial terminal output will constantly look like this if you do not power it sufficiently:

00150
05000
:-)

After powering the Wake on Shake and connecting it to your computer's serial terminal at 9600, 8-none-1-none, it will be actively listening for commands to change the settings. Just start typing the commands and values to configure the settings.

For example, if you are changing the threshold value as stated in the tutorial, you would start typing "t10010" and hit the enter button (essentially the carriage return or line feed) on the keyboard. Once the Wake on Shake receives the commands, it will return with the happy face:

:-)

If the command is not properly sent to the Wake on Shake, it will not respond too well and output an unhappy face:

:-(

After a certain period of time, the microcontroller will go back to sleep and respond with this character output:

z

I'm trying to adjust the threshold value of the wake on shake. I've connected to it with my 3.3v FTDI breakout, and it seems that I can indeed communicate with it at 9600bps. The problem is that I don't know how to enter in my terminal (tera term VT), the suggested command "t<0-248><cr>|<lf>" required to change the threshold. I tried typing "t10010", but every keystroke in the terminal just bounces back the following:

00150 05000 :-) z

I'm not sure what is wrong here, but I am definitely lost! Thanks!

-K

This board looks like it is over-engineered to me. Using a $5 accelerometer when a 3¢ vibration switch would do seems a little strange (unless you are a company that makes accelerometers).

I tried designing an analog circuit that would handle more output power and work over a wider output range on a smaller standby power budget: https://gasstationwithoutpumps.wordpress.com/2015/03/28/ideas-about-vibration-detection/

I've not tried building it, though (too many SMD parts). If anyone tries it, please leave a comment on my blog!

Can someone explain how to change the parameters of the wake-on-shake, as to change the time before resuming sleep, etc.? I'm trying to reverse engineer the code in the Github Repo but so far have had no luck compiling in the Arduino IDE. I'm not sure how to setup the IDE for programming the wake on shake board, i.e. what board do I choose, etc?

I see this is partially explained below. But an example Arduino sketch would be great.

Thanks!

Is there a way to tap into the accelerometer outputs (the ADXL362 looks like a 3-axis sensor) once the Arduino is awake? I'm building a battery-powered device that also has an accelerometer to detect orientation that could benefit from having a Wake and Shake for power management, and it'd be sweet if I could do away with the other sensor.

Or - is it possible to program the WaS so that it only wakes the unit up when a certain orientation is detected? That might also work in my project.

I can't get the Wake-On-Shake to wake up on its own. 3.7v is going in, but there is nothing coming out of VOUT unless the Wake pin is jumped.

Could this work in an "Oh Fudge" to replace the arduino and accelerometer?

Will it activate if i move the board along the x axis only. I want to put it in a shopping trolley, when the trolley moves, i want it to activate

On the next version, perhaps you could breakout the Vreg En line to allow for more seamless energy harvester hackery.

Wow! Best commented code I've seen SparkFun produce.

I'm really confused here, can this module supply 5V system that requires about 200mA to operate?. I reviewed the schematic to double check and it seems to me it provides only 3.3V. Am I correct?

Just how sensitive is this? Could it possibly be used in place of the Arduino and accelerometer in the Oh Fudge? Just put it in the box along with the beefcake and horns and maybe a small 555 arming circuit?

Will the unit remain on constantly when under motion? for example would it remain on while driving a car and turn off when the car is stopped?

Thats funny it doesn't look like a battery.

It might be in the wrong category.

Anyone else have those tin cans as a kid that when picked up and turned over would "mooo"? Flashbacks.