I know there have been a lot of doggy doors and pet flaps on here but I couldn’t find one that meets my thoughts. I want to be able to lock and unlock a flap when my dogs approach. I also have a cat that I don’t want unlocking it.
My first thoughts are RFIDs on the dogs. Simple and will work.
No my idea for the lock is rather simple also but just want a bit of input. I was thinking of a small solenoid from an old CD player. De-energised it will lock the flap, when a dog gets close enough it will unlock. It will automatically lock when it closes again.
The only downside to all this is I want to run it off batteries. But will use a plug pack if I have to.