I bought one from the Arduino official website. But I got the Linux side (something they call it u-boot) bricked. I'm so sad and I need to buy a new one.

I wonder if bare metal code would work with the linux processor. For real-time stuff?

TYPO in description: "combining the power Linux with ease of use of Arduino"

Add "of" between "power" and "Linux"

Hello,

The description states 12 ADC, but when I view images of this board or check the schematics I only see A0 to A5 pins which means total of 6 Analog inputs. What am I missing here? or does the 12 include all pins such as Vin...etc.?

Finally these are back in stock. I hope more of this style of Arduino board are developed. Start with a "real" Arduino that is compatible with all the sketches and shields out there to take care of the raw hardware interfacing and realtime issues. Then attach that to a "real" processor that can do heavy lifting for computing and access to the real world via Ethernet/Wifi/USB. Sure, it's possible for the ATMEGA to be networked, but it's clear to me that it's way more work than its worth for all but the most basic things.

I just attempted to do something with a Nano + Ethernet/SD setup, and damn was it painful. By the time you load Ethernet + SD libraries you have almost nothing left for program and data space. The W5100 is a toaster it gets so hot---heat sinks are on order in case I find something else to do with it. The Ethernet's DHCP support blocks the entire sketch while it's doing its thing. For this project I needed to be able to continually service the CDC port and can't afford it to go dark for 60 seconds while DHCP times out. Oh, and you get the unique joy of managing your own MAC Addressing.

Contrast that to the Yun, where all of these problems are taken care of, yet doesn't cost much more than a traditional Arduino plus Ether/SD. What was a very long, program/SRAM-busting sketch that took hours to work-almost-right becomes doable in a short shell script. So now that these are available again, I'm writing off the time on this particular project and just running it on a small network of Yuns. Can't complain too much, I learned a lot, both in how the Arduino works and what it's like to bump into its limits.

I'm not knocking the Arduino---I've just discovered them and am having a blast. There's a ton of problems that fit within the Arduino's capabilities. But coming from a long career in software (everything from apps to drivers to networks), my patience for doing things the hard way is thin at this point. Pairing the Arduino with a larger processor extends the reach of these things by an order of magnitude, and lets you solve the problem at hand in much less time.

Bought one of these to try out but returned it. The linux side is a really pitiful. RPI is a much better choice. The link between the arduino is in theory great, but not really that useful. It is just a serial link and they used up the only hardware serial line. Seriously the UNO is obsolete. Coupling it to a linex machine is useless. Get a 32bit teeensy 3.1 and serial to RPI. Now you can do anything ! Three extra hardware serial lines I2C I2S and two SPI.

Okay, I rarely get impressed by new boards. I was not impressed with the Due for my needs as the 5V support was an issue. So for certain projects I used the Uno32. Plenty of speed for my app. Now I needed a more generic set of tools for a sensor platform I am building. I wanted Linux and generic 5V IO. So I ordered this board. Wow! Not only are they nicely integrated on board they are nicely integrated in software. This combination is a serious win for my engineering needs. All I need to provide is power to platform and everything else goes over wifi. There is a serious focus on using Python internally and web technologies. Both of these are used a lot in our company.

So if you need a mobile platform for sensors this is a good piece of that system. I used the Yun combined with the Rover (https://www.sparkfun.com/products/10336) and it driver board (https://www.sparkfun.com/products/11593). I am using a couple of the 9 DOF boards for some inertial sensor testing. Putting these together has been relatively simplistic and mainly just deciphering datasheets. The Yun has been the least of the learning curve. That is how you know a device is designed well. You spend little time making it work.

So now that the Intel Edison has been out for a few months, how about a shootout-style comparison?

Compare this board to a pcDuino from LinkSprite and you will see that the YUN is inferior in all ways. Pick your criteria, price, HDMI graphics out, RAM, Flash, Ubuntu release stability, USB ports, Wifi etc... Don't buy this board until you do the comparison. I'm using pcDuinos in a product I sell. Its better than RPI too as it has an arduino shield socket.

The Yun has a lot of potential but I regret purchasing it. I've spent far more time fighting with things that should work out of the box than actually using it.

Two examples:

The wifi is shaky. There are a variety of threads about this on the web but no definitive fixes that work for everyone. For me, it usually forgets it has wifi after 20 minutes to 3 hours and requires reset(s) before it can be used again.

Most recently, they changed the serial (usb) baud rate to 250,000. The latest version of the Arduino software that supports the Yun still goes up only to 115,200. As an aside, you have to use a Beta version of the software - the Yun still isn't supported in the official version unless it was added very recently. Anyway, I did find a thread pointing out how to change the baud rate programmatically, but also a warning that it should be consistent between the ROM and the library. To change the library I believe I have to download and build it, which really shouldn't be necessary on Windows. To change the ROM... well, I don't know that I CAN change the ROM. In any case, this is way more of a science project than I signed up for.

If it worked out of the box and let you program using the Linux-based wifi-supporting SOC and was well integrated with the ATMEGA chip, it would be great. Perhaps some use it in such a way that they don't hit the nasty problems I've hit (see 2 representative samples above). For me, it's been a an unstable piece of junk with many known problems that don't seem to get addressed.

If you're into science projects and have a lot of free time (or feel lucky), this may be the board for you. If you actually have projects in mind that require a stable platform, this probably isn't it.

Just a heads up for anyone looking to buy a Yun to use with a shield: you should probably take a good look at a side view of the board. The vertical USB-A -connector and the Ethernet socket are both WAY taller than the USB-B -connector on for example an Uno (which is conveniently about exactly the height of the female headers on the arduino plus the height plastic spacers on the male headers on the shield).

Most shields will not fit on a Yun, despite the Arduino website claiming that the board is "compatible with the most shields designed for Arduino".

Personally I've used the old retired Screwshield wings as an adaptor (even then, I had to adjust the screwshield wings on the USB host side to make them fit). Another option would be to find the really really long stackable headers found on an official Wi-Fi shield, and resolder those on to old shields.

The Arduino Yun product page says the Linux processor has 16 MB Flash. You say 32 MB. Who's right?

http://arduino.cc/en/Main/ArduinoBoardYun

Does this board come with the PoE module preassembled on the board?

What are the specs for the Micro-SD recommended to use? Such as max size allowed, class, min recommended size, etc. I dug thru the manual a little and didn't see this (but could have missed it). I want to get started programming but want to order a micro sd card first

Can you run NodeJS on this thing? if so, I want!

Hmm. Tough call. You can get an actual real Raspberry Pi and the Alamode pi Shield which then puts a full arduino on top of the pi...and you have the best of both worlds for actually a little less.

RaspberryPi $35 : https://www.sparkfun.com/products/11546 Alamode $35: http://www.seeedstudio.com/depot/alamode-arduino-compatible-raspberry-pi-plate-p-1285.html

And its still cheaper than this.

If they really wanted this to take off they would have made it cheaper than actually buying the same thing seperately. At $50 I might be a buyer of this. At $77, I am a buyer of a real pi + an arduino bridge shield like the Alamode.

Why pay for this when you can buy a beaglebone black for about the same price?

Will it support https?

I'm looking for a platform to access a large e-ink display, but the combination for timing AND image size has been problematic, any chance that this would work well?

Couldn't get the schematic link to work; found this on the net: http://arduino.cc/en/uploads/Main/arduino-Yun-schematic.pdf

In the light of "there's always something missing" in the Arduino flavor that you want, why oh why don't these things have an on-board regulator?

Sure, that may not be a problem for a lot of people, but for my application I need the USB port free as a communications input, not an always-connected power source.

Oh well, a solvable problem, just wish it wasn't a problem to begin with.

Otherwise a very exciting board!

So this one can be programmed as same as the arduino uno?

Crazy, man, so much in one package. I feel conflicted about whether this even fits the Arduino stereotype.