This A-Star is based on the ATmega32U4 AVR microcontroller from Microchip (formerly Atmel), which has built-in USB functionality, and it ships with a preloaded Arduino-compatible bootloader. Its complement of peripheral hardware includes dual motor drivers capable of delivering a continuous 1.7 A per channel, along with pushbuttons, LEDs, and an optional buzzer for building a user interface. An efficient switching voltage regulator allows the controller to work over a wide range of input voltages (5.5 V to 36 V). The robot controller board conforms to the Raspberry Pi HAT specification, allowing it to be used as an add-on for a Raspberry Pi with a 40-pin GPIO header (Model B+ or newer, including Pi 3 Model B+ and Model A+). On-board level shifters make it easy to set up I²C communication and interface other signals between the two controllers, and the A-Star automatically supplies 5 V power to an attached Raspberry Pi. In this setup, the Raspberry Pi can handle the high-level robot control while relying on the A-Star for low-level tasks like reading analog sensors and controlling timing-sensitive devices.

Versions:
  • Surface mount components only: This version of the A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge (5.5 V to 36 V input voltage) does not include any through-hole components.
  • Assembled with selected through-hole components: This version of the A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge (5.5 V to 36 V input voltage) is assembled with selected through-hole connectors and components for use as a Raspberry Pi expansion board
Features:
  • Dimensions: 65 mm × 56 mm (2.6″ × 2.2″)
  • Programmable ATmega32U4 MCU with 32 KB flash, 2.5 KB SRAM, 1 KB EEPROM, and native full-speed USB (clocked by precision 16 MHz crystal oscillator)
  • Preloaded with Arduino-compatible bootloader (no external programmer required)
  • All 26 general-purpose I/O lines from the ATmega32U4 are broken out (including PB0, PD5, and PE2); 7 of these can be used as hardware PWM outputs and 12 of these can be used as analog inputs (some I/O lines are used by on-board hardware)
  • Convenient 0.1″-spaced power, ground, and signal connection points
  • Dual bidirectional MAX14870 motor drivers (1.7 A continuous per channel, 2.5 A peak per channel)
  • Buzzer option for simple sounds and music
  • 3 user-controllable LEDs
  • 3 user pushbuttons
  • Reset button
  • Level shifters for interfacing 5 V logic to 3.3 V Raspberry Pi
  • Power features:
    • 5 V power can be sourced from USB or from 5.5 V to 36 V external supply through on-board regulator (with several access points for connecting external power)
    • Switching 5 V regulator enables efficient operation
    • Power switch for external power inputs
    • Reverse-voltage protection on external power inputs
    • Power selection circuit allows for seamless switching between power sources while providing overcurrent protection, and feedback about which power source is selected
    • Provides 5 V power to Raspberry Pi
  • 6-pin ISP header for use with an external programmer
  • Comprehensive user’s guide

Specifications:

  • Processor: ATmega32U4 @ 16 MHz
  • RAM size: 2560 bytes
  • Program memory size: 32 Kbytes
  • Motor driver: MAX14870
  • Motor channels: 2
  • User I/O lines: 26
  • Input voltage range: 5.5 V to 36 V
  • Minimum operating voltage: 5.5 V
  • Maximum operating voltage: 36 V
  • Maximum output current: 2.5 A
  • Continuous output current per channel: 1.7 A
  • Peak output current per channel: 2.5 A
  • Logic voltage: 5 V
  • Reverse voltage protection?: Y
  • External programmer required?: N

Note: This product requires a USB A to Micro-B cable (not included) to connect to a computer

Package Includes:

  • 1 x Pololu 3118 / 3119 A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge
Processor Specifications
Speed 16 MHz
Controller Specifications
Family Name ATmega32U4
Memory Specifications
RAM 2560 bytes
Electrical Specifications
Output Current 2.5 A
Minimum Operating Voltage 5.5 V
Maximum Operating Voltage 36V
Additional Information
Warranty

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Pololu 3118 / 3119 A-Star 32U4 Robot Controller SV with Raspberry Pi Bridge

  • Brand: Pololu
  • Product Code:Pololu-A-Star-32U4-Robot
  • Reward Points:45
  • Availability:In Stock
  • रo 4,477.00

  • Price in reward points:4477

  • 3 or more रo 4,441.00
  • 6 or more रo 4,406.00
  • 15 or more रo 4,370.00
  • 32 or more रo 4,334.00

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Tags: Robot, Raspberry Pi, Controller

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