This ball caster kit includes a two-part black ABS housing, a 1″ diameter POM (also known as acetal or by the brand name Delrin) plastic ball, and three ABS rollers. When assembled, the ball caster is capable of rolling in any direction...

This motor driver board is an add-on for the Raspberry Pi Model B+ , A+, or Pi 2 that lets it easily control a pair of bidirectional, brushed DC motors. The expansion board uses a pair of Freescale MC33926 motor drivers, which operate...

The QTR-3RC reflectance sensor array requires digital I/O lines to take readings. The similar QTR-3A reflectance sensor array is available with analog outputs. Functional Description The QTR-3RC reflectance sensor array is intended as a...

The QTR-3A reflectance sensor array is intended as a line sensor, but it can be used as a general-purpose proximity or reflectance sensor. The module is a convenient carrier for three IR emitter and receiver (phototransistor) pairs. With...

This programmable module is designed to be the core of a small robot, either as an auxiliary controller atop a Raspberry Pi base or as a complete control solution on its own. Its Atmel ATmega32U4 microcontroller comes preloaded with an...

These universal mounting hubs are designed to work with most 0.250 inch (6.35 mm) shafts, including round shafts and “D” shafts, such as those on our NEMA 23 stepper motors . Each of the two included hubs has four mounting holes for...

Description These aluminum gearmotor brackets let you securely mount Pololu’s 25D mm metal gearmotors to your project. The brackets are sold in pairs , and each bracket includes two M3 screws for securing the motor to the bracket. Each...

These wheels are designed to press-fit securely onto the 3mm D output shafts on many of our gearmotors, including our micro metal gearmotors and our mini plastic gearmotors . They also work with our 35:1 and 115:1 15.5D metal gearmotors...

This M3 hex nut is made from steel, is zinc-plated, and comes in packs of 25.

This #4-40, pan-head screw is 1/2" long. It is made from steel, is zinc-plated, and comes in packs of 25.

The D24V10Fx family of step-down voltage regulators features the Intersil ISL85410 1A synchronous buck regulator and generates lower output voltages from input voltages as high as 36 V. They are switching regulators (also called...

The Pololu step-up/step-down voltage regulator S7V8A is a switching regulator(also called a switched-mode power supply (SMPS) or DC-to-DC converter) that uses a buck-boost topology. It takes an input voltage from 2.7 V to 11.8 V and...