Tamiya’s steel-ball caster is a good way to give a “third wheel” to a small robot powered by a differential drive. The kit comes with enough parts to make two casters, either 25 mm or 35 mm in height. The Tamiya 70144 ball caster from...

This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 171.79:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 8245.92 counts per revolution of the...

This 120:1 gearmotor (gearbox with brushed DC motor) is very compact and weighs only 0.7 ounces (20 grams) — perfect for building a quick, miniature robot. This gearmotor starts rotation at 0.58 V, drawing only 46.5 mA at 7 RPM. At 5 V,...

Overview The Tamiya 4-speed crank-axle gearbox has four possible gear ratios, including the highest gear ratio of Tamiya’s gearbox series, 5402:1, as well as 126:1, 441:1, and 1543:1. This gearbox also features a worm gear, which locks...

Overview The mini-motor gearbox kit from Tamiya makes it easy to get a small robot or plastic model moving. The kit includes one brushed DC motor and all the gears and parts to build any of the twelve possible gear ratio configurations:...

The Pololu dual high-power motor drivers are compact carriers for the VNH3SP30 and VNH2SP30 motor driver integrated circuits from ST. The board incorporates most of the components of the typical application diagram on page 8 of the...

Gearmotor Options This brushed DC gearmotor is available in high- and low-power versions in a number of gear ratios. The motor and encoder portions are available by themselves (i.e. without the gearbox), and many other gear ratios are...

This rugged wheel is designed to fit securely on the output shafts of our micro and 15.5D metal gearmotors. These gearmotors should be mounted onto the side of the hub with the protruding teeth, as shown on the right. The output shaft...

Pololu’s new IR beacon (infrared beacon) is an updated version of our original IR beacon . Like the original unit, the devices are transceivers meant to be used in pairs to give robots a simple means for detecting each other. You can use...

General AVR ISP Programmer The Pololu USB AVR Programmer is an extremely compact, low-cost in-system programmer (ISP) for Atmel’s AVR mirocontrollers, which makes this device an attractive programming solution for AVR-based controllers...

The Baby Orangutan is a complete control solution for small robots, all packed into a tiny 1.2" x 0.7" 24-pin DIP package. Its compact design eliminates bulkier components such as the LCD and switches while retaining the most essential...

This type of buck (step-down) voltage regulator is commonly used in the RC hobby industry, where it is called a “Battery Elimination Circuit” (BEC). It can convert a higher voltage, such as from a motor battery, to a lower 5 V level for...