Found James Bruce’s article on setting up a Raspberry Pi to Tweet yesterday. Great fun but more importantly from the chickens perspective I can now tweet the heater status and [if I can waterproof my pi cam] pictures of feathered friends as well.
Took a bit of playing around but ‘raspistill -o image.jpg -w 640 -h 480 -q 25’ creates images small enough that Twitter will accept them.
Link to James’s article – http://www.makeuseof.com/tag/how-to-build-a-raspberry-pi-twitter-bot/