Reduce speed on DC motor

Other Hardware Motors, Mechanics, Power and CNC
1

The Arduino starter kit came with a DC motor. I want to have it rotate at a slow speed so it can be on a reel and automatically dispense and wind wire, however, I don't know how I can slow it down.

Giving it an analog value of 1 is still way too fast.

Is there any way to control or reduce the speed. Like a 360 degree turn in a second rather than milliseconds?

Thanks

2

You need some device for driving the motor from an Arduino PWM pin (Arduino pins don't have
anything like enough current and will be damaged if directly connected to a motor, note).

Motor shields and drivers can be used, typically an H-bridge circuit that gives bi-directional
control, or a single MOSFET plus free-wheel diode can be used for a single direction.

https://playground.arduino.cc/Main/InterfacingWithHardware#Physical_Mechanical

3

Usually, if you want speeds that slow, you go with a geared drive. That way the motor can spin at its designed RPM but you get the output RPM that you want.