How to control multiple servo motors with Raspberry Pi

In the latest Explaining Computers video, Christopher Barnatt explains how to use servo motors with Raspberry Pi. Using servos is a great introduction to the digital making side of computing; servos allow you to control the movement of all manner of project components with your Raspberry Pi and a motor controller attached to its GPIO pins.

Servos and your Raspberry Pi

Christopher picked up his SG90 servo motors online, where you’ll find a variety of servo options. What type of servo you need depends on the project you want to create, so be sure to consider the weight and size of what you plan to move, and the speed at which you need to move it.

As the motor controller connects via GPIO, you can even use the tiny ¬£5 Raspberry Pi Zero to control your servo, which makes adding movement to your projects an option even when you’re under tight space constraints.

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2 comments

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will it cause inductive damage to pi withoout connecting motor driver?

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No, these are servos and the control input is just an ordinary 3 volt signal with no back-emfs to worry about. Personally, I would give the servos their own power supply to prevent the motor noise back-feeding into the Rpi via the power lines. For one or two on a demo you will probably get away with it. For a permanent set-up then a split power system would be better.

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