A-Star 32U4 Robot Controller LV W/ RaspberryPi Bridge (SMT only)
- Stock: In Stock
- Brand: Pololu - USA
- Model: ROB-2635
- Weight: 0.03kg
- MPN: 3116
Rs 1,849.00
(Excluding GST)
Description: The A-Star 32U4 Robot Controller LV with Raspberry Pi Bridge is a
programmable module well-suited for robotics applications, designed to
work either as an auxiliary controller mounted to a Raspberry Pi or as a
standalone control solution for a small robot. This A-Star (abbreviated
A*) is based on Atmel’s ATmega32U4 AVR microcontroller, 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 1.8Â 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 (2.7Â V
to 11Â 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+ , Model A+, and Pi 2 Model B). 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 (e.g. servos).
This version of the A-Star 32U4 Robot Controller LV with Raspberry Pi Bridge does not include any through-hole components. It ships as shown in the picture above, without any headers, terminal blocks , DC power jack, buzzer, or Raspberry Pi mounting hardware. This configuration is intended for those who want to use the board as a standalone robot controller or customize the way it is assembled for use with a Raspberry Pi.
A-Star 32U4 Robot Controller ships with a preloaded Arduino-compatible bootloader (which uses 4Â KB of flash memory, leaving 28Â KB available for the user program). We provide a software add-on that enables the board to be easily programmed from the Arduino environment and an Arduino library to make it easy to use the additional on-board hardware.
Resources:
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+ , Model A+, and Pi 2 Model B). 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 (e.g. servos).
This version of the A-Star 32U4 Robot Controller LV with Raspberry Pi Bridge does not include any through-hole components. It ships as shown in the picture above, without any headers, terminal blocks , DC power jack, buzzer, or Raspberry Pi mounting hardware. This configuration is intended for those who want to use the board as a standalone robot controller or customize the way it is assembled for use with a Raspberry Pi.
A-Star 32U4 Robot Controller ships with a preloaded Arduino-compatible bootloader (which uses 4Â KB of flash memory, leaving 28Â KB available for the user program). We provide a software add-on that enables the board to be easily programmed from the Arduino environment and an Arduino library to make it easy to use the additional on-board hardware.
The A-Star 32U4 Robot Controller has the same microcontroller as the Arduino Leonardo and Arduino Micro, and it runs at the same frequency, so most code examples intended for those boards should also work on the A-Star.
Features:
- Programmable ATmega32U4 MCU with 32Â KB flash, 2.5Â KB SRAM, 1Â KB EEPROM, and native full-speed USB (clocked by precision 16Â 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 DRV8838 motor drivers (1.8Â A per channel)
- Buzzer option for simple sounds and music
- 3 user-controllable LEDs
- 3 user pushbuttons
- Reset button
- Level shifters for interfacing 5Â V logic to 3.3Â V Raspberry Pi
- Power features:
- Can be powered from USB or from a 2.7Â V to 11Â V external source (with several access points for connecting external power)
- Switching 5Â 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 5Â V power to Raspberry Pi
- 6-pin ISP header for use with an external programmer
- Processor: ATmega32U4 @ 16 MHz
- RAM size: 2560 bytes
- Program memory size: 32 Kb
- Motor driver: DRV8838
- Motor channels: 2
- User I/O lines: 262
- Input voltage range: 2.7 V to 11 V
- Minimum operating voltage: 2.7 V
- Maximum operating voltage: 11 V
- Maximum output current: 1.5 A
- Continuous output current per channel: 1.8 A
- Peak output current per channel: 1.8 A
- Logic voltage: 5 V
- Reverse voltage protection?: Yes
- External programmer required?: No
- Size: 65 mm × 56 mm
- Weight: 14 g
Resources:
