Pololu Magnetic Encoder Pair Kit for 20D mm MetalGearmotors (20 CPR, 2.7-18V)

Add quadrature encoders to your 20D mm metal gearmotors (extended back shaft version required) with the Magnetic Encoder Pair Kit for 20D mm MetalGearmotors (12 CPR, 2.7-18V) that uses a magnetic disc and Hall effect sensors to provide 20 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit. Includes two dual-channel Hall effect sensor boards; Senses the rotation of the mag...