I am currently new to the Arduino but studying Computer Science. As a home project I'm investigating something that will require a form of Clamp/Arm.
The idea being is that the Clamp/Arm will release when it detects a form of signal/no signal.
My question being, where can I purchase a small, mechanical clamp? Preferably very small, very light, nothing too strong.
Or any suggestions for a different method, the clamp will only be holding something very light and will require to let go so the item it's holding can be dropped.