Chihai Motor Chr-775s-abhl Dc Magnetic Holzer Encoder Motor 24.0v8000rpm 12.0v4000rpm Robot Driving Motor - Dc Motor - AliExpress
Amazon.com: uxcell Gear Motor with Encoder DC 12V 201RPM Gear Ratio 21.3:1 D Shaft Metal Encoder Gear Motor Silver 25Dx49L mm for Robot RC Model DIY Engine : Toys & Games
Calculate Pulses per Revolution for a DC Motor With Encoder – Automatic Addison
PG71 & PG188 RS775-5 Motor with Encoder - AndyMark, Inc
Use an Arduino to Control a Motor - Projects
84 RPM HD Premium Planetary Gear Motor w/Encoder - ServoCity