I'm working on a parachute ejection system, something like this here:
My device is controlled by an Arduino Nano.
Now I'm looking for something to release the hatch. I don't want to use a servo, because, from what I know, servos always draw power. So I'm looking for an alternative mechanical part.
In everyday language I'd say: An electronically controllable deadbolt ;)
Something like this here with an electromagnet or an electromotor or ...
But I have no idea how such a thing would be called - so I can not even google for it.