A-Star Programmable Controllers

The table below shows some key features and specifications of our A-Star microcontroller boards to help you choose the right one for your application.


A-Star 32U4 Micro

A-Star 32U4 Mini ULV

A-Star 32U4 Mini LV

A-Star 32U4 Mini SV
Microcontroller: ATmega32U4 ATmega32U4
User I/O lines: 151 26
PWM outputs: 7 7
Analog inputs: 8 12
User LEDs: 2 3
Reset button:   yes
Operating voltage: 5.5 V to 15 V 0.5 V to 5.5 V 2.7 V to 11.8 V 5 V to 36 V
Regulator type: linear switching step-up switching step-up/step-down switching step-down
Regulated current2: 100 mA 500 mA 1000 mA 500 mA
Dimensions: 1″ × 0.6″ 1.9″ × 0.7″
Weight3: 1.3 g 3.4 g


1 Three extra digital I/O lines are accessible through the ISP header.

2 These values are rough approximations for comparison purposes. Available current depends on input voltage, current consumed by the board, ambient conditions, and regulator topology. See product documentation and performance graphs for details.

3 Without included optional headers.

Products in category “A-Star Programmable Controllers”

Pololu item #: 3101
Price: $12.75
Quantity:

The A-Star 32U4 Micro is a tiny programmable module featuring Atmel’s ATmega32U4 microcontroller. It packs a Micro-USB interface and 15 digital input/output pins (of which 7 can be used as PWM outputs and 8 as analog inputs) onto a board measuring only 1″ × 0.6″ and ships preloaded with an Arduino-compatible bootloader.

New!
Pololu item #: 3102
Price: $19.95
Quantity:

The A-Star 32U4 Mini ULV is a programmable module based on the ATmega32U4 from Atmel. Unlike competing products, it has an onboard switching step-up regulator that allows it to be powered efficiently from a 0.5 V to 5.5 V supply. This compact 1.9″ × 0.7″ board breaks out all 26 of the microcontroller’s I/O pins (of which 7 can be used as PWM outputs and 12 as analog inputs), and loading programs is made easier by a Micro-USB interface and a preloaded Arduino-compatible bootloader.

New!
Pololu item #: 3103
Price: $19.95
Quantity:

The A-Star 32U4 Mini LV is a programmable module based on the ATmega32U4 from Atmel. Unlike competing products, it has an onboard switching step-up/step-down regulator that allows it to be powered efficiently from a 2.7 V to 11.8 V supply. This compact 1.9″ × 0.7″ board breaks out all 26 of the microcontroller’s I/O pins (of which 7 can be used as PWM outputs and 12 as analog inputs), and loading programs is made easier by a Micro-USB interface and a preloaded Arduino-compatible bootloader.

New!
Pololu item #: 3104
Price: $19.95
Quantity:

The A-Star 32U4 Mini SV is a programmable module based on the ATmega32U4 from Atmel. Unlike competing products, it has an onboard switching step-down regulator that allows it to be powered efficiently from a 5 V to 36 V supply. This compact 1.9″ × 0.7″ board breaks out all 26 of the microcontroller’s I/O pins (of which 7 can be used as PWM outputs and 12 as analog inputs), and loading programs is made easier by a Micro-USB interface and a preloaded Arduino-compatible bootloader.