What features do I want? Right now I think I need the following.
- Close door 20 mins after sun down
- ideally be safe for chickens, halt if obstructed OR
- be slow enough to give chickens time to get out of the way
- Open door at sun rise
- Monitor coop temperature
- Monitor outside temperature
- Communicate to raspberry pi
- Pi will keep accurate time (where the Arduino will not) and send to arduino to sync
- Pi will graph temperature, at intervals
- Pi will respond to alerts
- Alert when too cold in coop (something has gone wrong)
- Alert when too cold outside (drinking water will be frozen)