Linear actuators convert the fast rotation of a DC motor into slow linear movement, and they can provide quite a strong pushing or pulling force. The most basic definition of a linear actuator is that it’s a mechanical device that converts energy to create motion in a straight line; contrasted with circular motion of a conventional electric motor. It can also be used to apply a force.
You can easily control linear actuators using a simple H-bridge circuit — put it together with an Arduino and a bit of woodwork, and you can make yourself an automatic crusher for beverage cans — no soldering required!
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