Comment Shuttle DS437! (Score 5, Informative) 183
Do yourself a favor and order a Shuttle DS437, I bought one myself and cannot think of a better little box for playing with embedded systems. Here's why:
- Its small -- about the size of a 5.25" disk drive.
- Its low-power -- not as low as you'd like -- but less than 20watts under load for the system. Its passively cooled.
- It takes a 12v barrel-plug from a standard 65watt laptop power adapter (included) -- easy to replace anywhere in the world. Also good if the impetus for your low-power requirement is an exotic wish, like being able to run the system from battery or solar.
- Its relatively inexpensive -- about $200 from Amazon.com, and qualifies for Prime shipping. You'll need to add storage and RAM, but maybet have some DDR3 so-dimms and a spare 2.5" drive kicking around from an old laptop.
- Its got two DB9 Serial ports, right on the front. Handy!
- Its a modern system: 64bit, dual-core, Ivy Bridge, SSE 4.2, supports up to 16GB ram.
- Connectivity: VGA/HDMI, USB 3.0, USB 2.0, dual gigabit NICs, Wireless N WiFi
- Storage options: you've got one mSata slot and one 2.5" sata drive. I've got a 128GB SSD in the mSata slot, and a 500GB magnetic drive installed
- It took Ubuntu 14.04 without any significant fuss. Most things worked out of the box. I'm not a linux super expert, but got the rest working within an hour or so.
It's "only" 1.8Ghz, but we're talking Ivy Bridge here, not some wimpy Atom or ARM core. Plus, in my experience you really want x86 for your host machine. Not every compiler or tool you might want to use is going to be supported on, say, a lower-powered ARM system.
I considered a lot of exotic ARM boards as my development host, including BeagleBone, Jetson-K1, and a handful of others. I think the D437 leads by a wide margin, but for what its worth I considered the Jetson-K1 board a distant runner-up.