Let's Make Robots!
I've recently bought this module and believe someone would like to use it in his/her design. This one is cheap, you can find it in the website … Read more

DC motor with 3 wires?

Hi guys!

anyone knows what the third wire in a dc motor is for? I have two dc motors with 3 wires (blue, yellow and black), the first two are the common ones but don't know why there is a third one. I have unscrewed the cap of the motor and this wire is connected to the shield / armour of the motor.

Perhaps I should connect this wire to ground to minimize EMI... Any ideas? Thanks

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