A-Star Programmable Controllers
From top to bottom: A-Star 328PB Micro, 32U4 Micro, 32U4 Mini SV, and 32U4 Prime SV.
The Pololu A-Star microcontroller boards are general-purpose programmable modules based on Atmel AVR microcontrollers. A USB interface and preloaded Arduino-compatible bootloader on each A* makes it easy to get started programming them. 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 328PB Micro||A-Star 32U4 Micro||A-Star 32U4 Mini ULV
A-Star 32U4 Mini LV
A-Star 32U4 Mini SV
|A-Star 32U4 Prime LV
A-Star 32U4 Prime SV
|A-Star 32U4 Robot Controller LV
A-Star 32U4 Robot Controller SV
|User I/O lines:||24||18||26||26(1)||26(1)|
|Ground access points:||6||2||4||43||44|
|Operating voltage:||3.3V VCC: 3.8 V to 15 V
5V VCC: 5.5 V to 15 V
|5.5 V to 15 V||ULV: 0.5 V to 5.5 V
LV: 2.7 V to 11.8 V
SV: 5 V to 40 V
|LV: 2.7 V to 11.8 V
SV: 5 V to 36 V
|LV: 2.7 V to 11 V
SV: 5.5 V to 36 V
|Regulator type:||3.3 V or 5 V linear||5 V linear||5 V switching
|5 V switching
|5 V switching
|Regulated current:(2)||100 mA||100 mA||ULV: 500 mA
LV: 1 A
SV: 800 mA
|1 A||LV: 1 A
SV: 1.5 A
|Dimensions:||1.3″ × 0.7″||1″ × 0.6″||1.9″ × 0.7″||2.8″ × 2.1″||2.6″ × 2.2″|
|Weight:||1.5 g(3)||1.3 g(3)||3.4 g(3)||13 g to 33 g||14 g to 23 g|
|1 Some microcontroller resources are used by on-board hardware.|
|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.|
The A-Star 328PB Micro is a tiny programmable module based on the ATmega328PB AVR microcontroller. It features 24 digital I/O pins (of which 9 can be used as PWM outputs and 8 as analog inputs) on a board measuring only 1.3″ × 0.7″ and ships preloaded with an Arduino-compatible serial bootloader. 5 V and 3.3 V versions are available in several clock speeds.
These compact 1.9″ × 0.7″ microcontroller boards are based on the ATmega32U4 AVR MCU. They feature efficient switching regulators for operation over a variety of voltage ranges, and all 26 of the MCU’s I/O pins are broken out. A MicroUSB interface and a preloaded Arduino-compatible bootloader make loading programs easier.
These Arduino-compatible programmable modules are designed to be the core of a small robot, either as an auxiliary controller atop a Raspberry Pi base or as complete control solutions on their own. On-board hardware includes dual motor drivers, an efficient voltage regulator, and level shifters for communication with a Raspberry Pi.
Products in category “A-Star Programmable Controllers”
The A-Star 32U4 Micro is a tiny programmable module featuring the ATmega32U4 AVR microcontroller. It packs a Micro-USB interface and 18 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.