The Pololu 3pi+ 32U4 robot is a complete, high-performance mobile platform based on the Arduino-compatible ATmega32U4 MCU, and this kit contains all the parts you need to build the Turtle Edition version , including a pair of 75:1 LP 6V Micro Metal Gearmotors.
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The 3pi+ 32U4 is a versatile, high-performance, user-programmable robot that measures just 9.7 cm (3.8″) in diameter. At its heart is an ATmega32U4 AVR microcontroller from Microchip (formerly Atmel), and like our A-Star 32U4 programmable controllers, the 3pi+ 32U4 features a USB interface and ships preloaded with an Arduino-compatible bootloader, so all you need to program it is a USB A to Micro-B cable (not included). A software add-on is available that makes it easy to program the robot from the Arduino environment, and we have Arduino libraries and example sketches to help get you started. For advanced users who want to customise or enhance their robots with additional peripherals, the robot’s power rails, power system controls, and microcontroller’s I/O lines can be accessed via several 0.1″-pitch expansion ports.
The 3pi+ (or 3𝜋+) features two H-bridge motor drivers and a variety of integrated sensors, including a pair of quadrature encoders for closed-loop motor control, a complete inertial measurement unit (3-axis accelerometer, gyro, and magnetometer), five downwards-facing reflectance sensors for line-following or edge-detection, and left and right bump sensors along the front face of the robot. Three on-board pushbuttons offer a convenient interface for user input, and an LCD, buzzer, and indicator LEDs allow the robot to provide feedback.
The robot also features a unique power system that runs the motors at a constant 8 V independent of the battery charge level, so the speed of the motors does not vary with the battery voltage.
The 3pi+ 32U4 robot is available as a kit or fully assembled with three different motor options:
3pi+ 32U4 Version | Products | Micro Metal Gearmotor | Top Speed | Comments |
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Standard Edition | assembled or kit | 30:1 MP 6V | 1.5 m/s | good combination of speed and controllability |
Turtle Edition | assembled or kit | 75:1 LP 6V | 0.4 m/s | longest battery life, easiest to control, good for swarm robots or introductory robotics courses |
Hyper Edition | assembled or kit | 15:1 HPCB 6V | ~4 m/s | very fast and difficult to control, easy to damage; only recommended for advanced users |
For those who would prefer to use different motors than these versions above, the 3pi+ chassis and 3pi+ 32U4 control board are available separately and can be combined with a pair of motors to make a custom kit.
This product is the kit version of the Turtle Edition 3pi+ 32U4 Robot. Assembly (including soldering) is required.
This kit includes:
Original Pololu 3pi robot. |
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The 3pi+ 32U4 offers many major improvements over the original 3pi, including:
The 3pi+ 32U4 uses a different microcontroller with different pin mappings compared to the older 3pi, and some of the software library interfaces are different, so programs written for the original 3pi will not work on the 3pi+ 32U4 without modification.
Size: | 97L × 96W × 36H mm |
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Weight: | 100 g1 |
Assembled: | N |
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Version: | Turtle Edition (75:1 LP Motors) |
User’s manual for the Pololu 3pi+ 32U4 robot.
This download contains the Windows drivers for the A-Star 32U4 and the rest of our 32U4 family of boards.
This model uses simplified models of the control electronics to reduce the file size. A more detailed model of the 3pi-plus-32u4-control-board (28MB step) is available separately.
This dxf makes it possible to get various dimension measurements of the 3pi+ 32U4 Robot.
Arduino integrated development environment (IDE) software
This repository contains Arduino add-on files, Windows drivers, and bootloaders for the A-Star 328PB, A-Star 32U4, and the rest of our 32U4 family of boards.
Microchip’s product page for the ATmega32U4 AVR microcontroller, with links to its datasheet, application notes, and other resources.