Nodes are supposed to be equipped with:
- RF transceiver
- 4 buttons
- a LED for each button
- an RGB LED
- a buzzer
- a 1-wire interface for authentication buttons
For ease of development, they also get a serial interface.
Both for development and and for the final version (as far as we know now), an ATMega168 is used; for development, encased in an Arduino, which also binds the RX/TX pins to a USB serial interface.
The wiring is defined in an eagle file in our yet-to-be-set-up SVN repository.