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

A-Star 32U4 Prime LV
Microcontroller: ATmega32U4 ATmega32U4 Amega32U4
User I/O lines: 18 26 26
PWM outputs: 7 7 7
Analog inputs: 8 12 12
Ground access points: 2 4 43
User LEDs: 2 3 3
User pushbuttons: 3
Reset button:   yes yes
Power switch:     yes
Buzzer option:     yes
microSD option:     yes
LCD option:     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 2.7 V to 11.8 V
Regulator type: linear switching step-up switching step-up/step-down switching step-down switching step-up/step-down
Regulated current: 100 mA(1) 500 mA(1) 1000 mA(1) 500 mA(1) 1000 mA(1)
Dimensions: 1″ × 0.6″ 1.9″ × 0.7″ 2.8″ × 2.1″
Weight: 1.3 g(2) 3.4 g(2) 13 g to 33 g

1 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.

2 Without included optional headers.

Subcategories

These microcontroller boards are based on Atmel’s ATmega32U4 MCU and arranged in the common Arduino form factor. They offer many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V.


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.

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.

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.

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.