weather & arduino

Finally I decide to use a 434MHz transmitter and receiver from sparkfun.

They operate oviously in the 434MHz band, a hundred o meters away (in open area) and needs between 2 and 12v feeding and admit 2400 o 4800 bps.

Transmiter datasheet
Receiver datasheet
Interesting tutorial (arduino code included)
AVR rf tutorial

I’ve bought two RBBB arduino clone (Really Bare Bones Board) from Modern Device.

It only has a pair of  electrolytic capacitors,  another pair of ceramic capacitors, a tiny resistor, a ceramic resonator, power connector and the output pins.

All the stuff can be soldered in half an hour. I spent 2 hours in the first one because a beginner mistake, and only 20 minutes in the second one.