DESCRIPTION
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 analogue inputs), and loading programs is made easier by a Micro-USB interface and a preloaded Arduino-compatible bootloader.
A robust power selection circuit enables seamless transitions between regulator power and USB power, and overcurrent and reverse-voltage protection help safeguard the board against accidental damage.
All 26 general-purpose I/O lines on the ATmega32U4 are accessible on the A-Star 32U4 Mini; 7 of these are usable as PWM outputs and 12 are usable as analogue inputs. The board measures 1.9″— 0.7″, the same size as an Arduino Micro, and features a pair of mounting holes sized for #2 or M2 screws (not included). Its 0.”³ pin spacing makes the A-Star easy to use with solderless breadboards, perfboards, and 0.”³-pitch connectors.
FEATURES
- Dimensions: 1.9″ x 0.7″ (1.95″ x 0.7″ including USB Micro-B connector)
- Programmable 16 MHz Atmel ATmega32U4 AVR microcontroller
- 32 KB flash (4 KB used by bootloader, leaving 28 KB available for user program by default)
- 2.5 KB SRAM
- 1 KB EEPROM
- Native full-speed USB (12 Mbps)
- Preloaded with Arduino-compatible bootloader (no external programmer required)
- All I/O lines from the ATmega32U4 broken out in a compact package
- 26 general-purpose I/O pins available along the sides of the board
- 7 pins can be configured as hardware PWM outputs
- 12 pins can be configured as analogue inputs
- 3 user-controllable LEDs
- Reset button
- Can be powered from USB or from an external source:
- ULV: 0.5 V to 5.5 V
- LV: 2.7 V to 11.8 V
- SV: 5 V to 36 V
- Switching regulator enables efficient low-power operation
- Power selection circuit with seamless switching between power sources and overcurrent protection
- Reverse-voltage protection on external power inputs
- Precision 16 MHz crystal
- 6-pin ISP header for use with an external programmer
RESOURCES
- Pololu A-Star 32U4 User’s Guide
- Pololu A-Star Software and Drivers (version 1.0.1) – This download contains the Windows drivers for the A-Star, the add-on for the Arduino IDE, the source code and compiled version of the bootloader, and a configuration file that some Linux users will need.
- A-Star 32U4 Mini pinout diagram
- A-Star 32U4 Mini schematic diagram
- A-Star 32U4 Mini ULV dimension diagram
- Github Repository
- Pololu A-Star and Orangutan Forum Section
- LUFA – the Lightweight USB Framework for AVRs
Prompt shipping and expert packing
Because of our long-standing partnership in a long-standing partnership with UPS, FedEx, DHL as well as a range of other world-class carriers, we are able to offer various shipping options. Our warehouse staff is highly trained and will pack your goods in accordance with our precise and exact specifications. Before shipping, all goods will be thoroughly examined and securely secured. Everyday we deliver hundreds of packages to our customers across many countries. This is a sign of our determination to be the largest online retailer on earth. There are distribution centers and warehouses located in Europe and in the USA.
Orders with more than one item are given processing time according to each item.
Before shipment, all ordered items will be thoroughly examined. Most orders today are shipped in 48 hours. The expected delivery time is between 3-7 days.
Returns
We do not control the inventory in our warehouse and factory. This means that the actual stock could alter at any time. It's possible that the stocks could be depleted after the order has been made.
The policy is for 30 days. However, if the 30 days have elapsed since you purchased your product, we are unable to offer you a return or exchange.
You are able to return a product in the event that it is not used and in the same condition the day you received it. It must also be in the original packaging.
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