https://www.pololu.com/product/5660?coupon=20DENCINTRO
Pololu - Magnetic Encoder Pair Kit with Top-Entry Connector for 20D mm Metal Gearmotors, 20 CPR,...
Add quadrature encoders to your 20D mm metal gearmotors (extended back shaft version required) with this kit that uses a magnetic disc and Hall effect sensors...
metal gearmotorspololumagneticencoderpair
https://www.electan.com/12v-motor-with-cpr-encoder-for-25d-metal-gearmotors-p-7128.html
3212 Pololu HP 12V Motor with 48 CPR Encoder for 25D mm Metal Gearmotors (No Gea
HP 12V Motor with 48 CPR Encoder for 25D mm Metal Gearmotors (No Gearbox) Tu Tienda Donde Comprar Microbit y Arduino On Line: Maqueen, Kits Arduino, Makey...
metal gearmotorspololuhpcprencoder