Have a 12v 15mA motor (4rpm), 12v 5AH lead-acid battery, and 4.5v/50mA solar panel. Building chicken door. Answered
I've already built a chicken door with a $100 drapery motor, but this seems overpriced to me, when there are so many available salvage 12 v motors from old car doors. The drapery motor is simple to use because rather than limit switches it simply uses an adjustable mechanical plastic slotted disc to manually toggle a double pole switch to operate the motor. With a timer on the line set to on/off twice a day, it's an easy build.
But I want to make a standalone unit, (solar powered) using a 12v system. I have the battery, with what I think is sufficient juice, and the motor from an old Chrysler window opener. I'm hoping to keep the battery "topped off" with the solar panel. Since the unit will only get used twice a day I would think reserver power should be manageable. I'll need a 12 volt timer of some sort, unless I use an inverter of some kind... don't know... this is where I get messed up... I can wire things, but I can't do the circuitry because I'm illiterate when it comes to amps, volts, rectifying, capacitating, etc?