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I want to make the head and arms move on a prop this year. This will be my first time doing it but I am very good at C++, arduino's and raspberry pi programming. I have a ton of spare DC gear laying around but doing movement is nothing I have tried before. Everything will be light weight. Do you use a normal stepper motor to achieve something like this?
 

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The weight of your prop will determine how much torque/speed you will need. If your looking for a low speed motor for arm or head movement then try (TYC-50 AC110-127V Synchronous Motor 5-6 RPM CW/CCW 4W Torque 4KGF.CM Silver); also known as "deer motors". You can purchase it from Amazon or similar online stores. The motor also comes in faster speeds which will provide more torque. If you need a motor for a heavier prop (torso or full body) then I recommend using a high torque motor; also know as a "wiper motor". You can get this at frightprops.com or other specialty online Halloween prop stores.
 

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The micros usually don't hold up for jaw sync, I use standard servos. Standard servos are also usually sufficient for head movement. Arm movement may require a larger high torque servo. As you are already good at writing code, servos are the way to go, much more control is achievable than using motors.
 
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