Pololu 3pi Robot ATmega328 microcontroller

Item number: PO975

Category: SALE %

65,72 €

including 19% VAT.,

Old price: 110,94 €
Available now!

Shipping time: 1 - 3 workdays



The 3pi robot is designed to excel in line-following and maze-solving competitions. It has a small size (9.5 cm/3.7" diameter, 83 g/2.9 oz without batteries) and takes just four AAA cells (not included), while a unique power system runs the motors at a constant 9.25 V independent of the battery charge level. The regulated voltage allows the 3pi to reach speeds up to 100 cm/second while making precise turns and spins that don?t vary with the battery voltage.

The 3pi robot makes a great platform for people with C programming experience to learn robotics, and it is a fun environment for ambitious beginners to learn C programming. At its heart is an ATmega328P AVR microcontroller from Microchip (formerly Atmel) running at 20 MHz and featuring 32 KB of flash program memory, 2 KB RAM, and 1 KB of persistent EEPROM memory. The popular, free GNU C/C++ compiler works perfectly with the 3pi, Atmel Studio provides a comfortable development environment, and an extensive set of libraries provided by Pololu makes it a breeze to interface with all of the integrated hardware. The 3pi is also compatible with the popular Arduino development platform. We provide a number of sample programs to show how to use the various 3pi components, as well as how to perform more complex behaviors such as line following and maze solving.


  • Size:3.7" diameter

General specifications

  • Processor:ATmega328P
  • Motor driver:TB6612FNG
  • Motor channels:2
  • User I/O lines:21
  • Minimum operating voltage:3 V2
  • Maximum operating voltage:7 V2
  • Maximum PWM frequency:80 kHz
  • Reverse voltage protection?:Y
  • External programmer required?:Y


1.Digital I/O lines PD0 and PD1 are available; two more analog inputs and one analog/digital pin can be made available by removing jumpers and disabling special features of the board.
2.Designed for use with 4 x AAA NiMH or Alkaline cells. A step-up regulator boosts the motor voltage to 9.25 V.

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