* [http://leaflabs.com/docs/unix-toolchain.html LeafLabs command-line toolchain] might apply in parts, or at least inspire
* [https://github.com/esden/summon-arm-toolchain summon arm toolchain] builds an ARM toolchain
== Umbrellas ==
Eric says: Expansion boards will be called umbrellas.
possible umbrellas:
* sdcard umbrella
* rf umbrella ([http://en.wikipedia.org/wiki/6LoWPAN 6LoWPAN]/[http://en.wikipedia.org/wiki/IEEE_802.15.4 802.15.4]?)
* stepper motor umbrella
* lcd umbrella
* microphone umbrella
* speaker umbrella (with small amp)
* power umbrella (bigger voltage regulator)
=== Example projects ===