A quick update on the G3H project. I took the twittering prototype offline as I need the electronics for the next step: wireless communication between the greenhouse and the modem inside the house.
I have spent several nights already trying to get two Arduino boards, each equipped with an Xbee-shield, to communicate. I worked on the example provided on the Arduino site, but no luck 
It turned out that I obtained two shields with “Series 2″ radio’s, which meant the example code would not work right off the bat. But, a post on Didier Stevens’ website pointed me in the right direction and eventually I was able to get both boards running and communicating.
The two boards seem to be communicating as one is sending the signal to switch an LED on and off every second on the other board. I see the LED switching on and off, but the behaviour is quite erratic. So, more investigation to be done there…
To be continued…
Light:
Moisture:
