This page collects information on various __motors__ available that are suitable for [robots]. Some motors have a [motor encoder] kit available, to perform [odometry]. So far we have experience with two motors: the OSEPP 25mm motor that comes with the OSEPP Tank Kit, and the micro gear motors (made by Pololu?). The latter are available in a variety of gear ratios. Both have a Hall Effect motor encoder kit available. !! OSEPP Motor This is the motor that comes with the OSEPP Tank Kit. You can buy motor kits that come with an anodised aluminium wheel, a silicon tire. A Hall Effect [motor encoder] kit is available separately. * Voltage: 9v DC * Length: 52mm * Diameter: 25mm * Rated Torque (Kgf.cm): 1.5 * RPM: 8500 ! MiniQ Motor Wheel Set RobotShop sell a [MiniQ Motor Wheel Set w/ Encoder|https://www.robotshop.com/en/miniq-motor-wheel-set-encoder.html|https://www.robotshop.com/en/miniq-motor-wheel-set-encoder.html] that includes two micro gear motors, wheels, white plastic hubs, and a [motor encoder] pair — with the encoders integrated into the motor mount — for US$36. They use a 50:1 gear ratio rather than 298:1 (perhaps that's better?). This uses an optical encoder rather than a Hall Effect encoder, using the white teeth of the inner wheel hub for the optical interrupter, 48 pulses per revolution. ---- [{Tag Hardware Motors}]