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Comment by unwind | Hacker News Reader

Yes, but SparkFun's Pro boards lack the on-board USB hardware, and require you to have a "fancy" USB-to-TTL cable. There's also the ExtraCore (https://tindie.com/dustinandrews/extracore/) which has the same requirement.

And the Arduino Nano seems to no longer be carried by Arduino themselves, I was unable to find it in the shop.

I think this looks nice since it's based on a more recent AVR chip, that has on-board USB so that even the small form factor doesn't mean the board can't have a "native" USB connector.

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There's still the Teensy 2.0/3.0 which is smaller & cheaper than this board. The Teensy 2.0 ($16) uses the same chip (32u4) as the arduino micro, and the 3.0 ($19) uses an arm-m4 chip which also provides a DSP. The best thing about the Teensy is that it's available right now.

Is the teensy 3(arm) fully compatible with all the arduino libraries ?

Yes and no. Even some arduinos are incompatible with certain arduino libraries. Most of the libraries were written for the most popular 328p chip at the most popular frequency (16mhz), but if you're using a Due or Attiny or even the 328p running a different frequency, you may need to touch up the libraries to get it to work. My guess is the compatibility levels would be similar here.

Most people are probably only aware of the arduino uno which uses the 328p chip, but there are probably 20 other atmel chip models that are also "arduino compatible". I typically use the attiny85 because my one-off projects rarely need all the pins on the 328p.

Teensy 3.0 looks awesome. Do you know anything similar with a radio?

The Wixel seems to be similar, but with built in wireless.

http://www.pololu.com/catalog/product/1336

Looks like a 30kbps radio on a serial interface, 256 channels in the 2.4GHz band, 50 foot indoor range typical. $20 for µcontroller with radio.

The teensy 3.0 also comes with a 16 bit ADC (of the succeessive approximation breed, not sure of the quality).

Most of the arduino-like boards have a 10 bit resolution.

I've been using Teensy 2 for about a year and they're awesome!

The Pro Micro (http://sfe.io/11098) does have on-board USB hardware that requires no USB-TTL converters, no matter how fancy. We added it to the SparkFun site in late February.

Arduino Nano in stock: http://www.miniinthebox.com/pt/eletronica-diy-arduino-v3-0-n..., http://www.gravitech.us/arna30wiatp.html

There's also Tinyduino on the making: http://www.kickstarter.com/projects/kenburns/tinyduino-the-t...

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