We wanted a way to let the cats in and out whilst we’re away, we don’t let them out at night as they decimate the local wildlife. The neighbours feed them but we can’t expect them to get round early enough to let them out or lock the flap at night so…
One cheap linear continuous solenoid, a length of cable and a 24vac to 12vdc converter and Bingo! Remote controlled cat flap!
If anyone wants further details I’ll happily write it up.
I would like to know more about how you built the flap control. I don’t need OS to control it as I have low voltage relays in my automation system that can provide a similar control function, but the ability to control the cat door is interesting. I need to look at putting RFID chips on the cats so I know where they are before closing the door:)