Hello,
I am not super familiar with any of this, but was hoping someone could help. Recently built a chicken coop in our backyard. The door has a standard gate latch on it. Picture pf the type below. Chickens get up earlier and and are nosey until they get let out to roam the yard. I need to be able to open this latch remotely. Thinking an actuator of some type with a wireless remote. There is no power available so would need to be battery powered. Only about 20-30 feet for the remote to reach. Thanks for any help.
There are many ways to achieve what you want. One relatively easily was is using a servo motor. The question is really the weatherproofing needed - is it outdoors and will be subjected to rain, snow, high humidity etc? If the answer is yes, then you’ll need a waterproof servo. Although you indicate the signal needs to travel 20-30 feet, any physical buildings will impede wireless signals. A servo can be controlled using a normal RC servo controller (ex: RB-Gws-32). Power to the servos and receiver is done using a 4.8V to 6V battery pack (you’ll also need a charger).
The servo would simply pull back a string which is connected to the top of the mechanism, and done - latch open.
If you don’t need the door to close automatically, you can attach a spring to the door to have it be pushed out automatically, or even use a counterweight and pulley.
Another approach would be to use a normal timer and DC solenoid; you would set the timer to the right time and then the solenoid simply retracts