Pololu A-Star 32U4 Mini SV - Atmega32u4 module

Product description: PololuA-Star 32U4 Mini SV - Atmega32u4

A-Star, like Arduino Micro, is based on Leonardo module - it uses Atmega32u4 microcontroller from AVR family. It is equipped with 26 digital inputs/outputs, 7 of which can be used as PWM outputs and 12 as analogue inputs. The chip works with 5 V, clocked with a 16 MHz clock signal.

Unlike Arduino Micro, it has no soldered connectors (goldpin bars are included). The user can decide which terminals he will need, so the board can keep its small size.

Outputs

The above figure shows the layout of the outputs of the A-Star Mini module by Pololu. The I/O pins (inputs/outputs) with the ATmega32u4 documentation compliant name are marked in yellow, the analogue inputs of the A/C converter are marked in green.

Programming

Creating and uploading software enables free Arduino IDE environment. Implemented bootloader allows to upload program directly via micro USB cable. Detailed description can be found in the manual provided by Polol company.

Pololu A-Star specification

• Power supply voltage:
• From 5V USB socket
• External VIN: 5 V to 36 V
• Microcontroller: ATmega32u4
• Flash memory: 32 kb
• SRAM: 2.5 kb
• Clock: 16 MHz
• The voltage of the leads: 5 V
• Pins I/O: 26
• PWM channels: 7
• Number of analog inputs: 12
• Serial interfaces: UART, SPI, I2C
• Built-in full-speed USB controller
• External interruptions
• Built-in impulse voltage regulator with current capacity up to 0.5 A
• Three LEDs at your disposal
• RESET button
• Outgoing ICSP connector for connecting an external AVR programmer
• Micro USB connector for programming(microUSB cable sold separately)
• Module compatible with Arduino IDE environment
• Soldering goldpin connectors included
• Dimensions: 48.5 x 18 mm
• Weight: 3.5 g (without connectors)