SparkFun Qwiic Pro Micro – USB-C (ATmega32U4) – Compatible with Arduino development board 5V/16MHz microcontroller AP2112 3.3V Voltage Regulator Castellated PTH pin pads Reset button Maximum 6V input

Price: $21.49
(as of Jan 20,2023 15:53:37 UTC – Details)

We’re adding to our line-up of compatible with Arduino microcontrollers once more! The SparkFun Qwiic Pro Micro is a revision of the original Pro Micro and is, overall, functionally the same as the previous version. The board is the same size as the original Pro Micro but we added a few additional features by shrinking down some components on the board such as a reset button, Qwiic connector, USB-C, and castellated pads (this makes it really handy for you custom keyboard creators out there)! Think the Pro Mini except with an ATmega32U4 on board and full USB functionality.This tiny little board does all of the neat-o Arduino tricks that you’re familiar with: nine channels of 10-bit ADC, five PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 5V and 16MHz, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. There is a voltage regulator on board so it can accept voltage up to 6VDC. If you’re supplying unregulated power to the board, be sure to connect to the “RAW” pin on not VCC.
The benefit of the reset button is to quickly reset the board or place it into bootloader mode without the need to take out a piece of jumper wire. The USB micro-b connector has been replaced with the USB type C connector. The through-hole pads have castellated edges for each pin to add a lower profile in your projects should you decide to build it into another assembly during production. Finally, a Qwiic connector is populated on the bottom of the board to easily add Qwiic enabled I2C devices to your projects!
As the Pro Micro’s main feature is its innate USB functionality, the most common way to power it is via USB. If the jumper is set to the default 5V, the board will be powered directly from the USB bus. If the jumper is set to 3.3V, the board will regulate the 5V supply coming in from USB down to 3.3V.
Small Compatible with Arduino board. Includes Reset button, 9x 10-bit ADC pins. 12x Digital I/Os (5 are PWM capable). Note: Board only. Additional accessories will be required.
Improved version of the SparkFun Pro Micro. ATmega32U4 running at 5V/16MHz Supported under Arduino IDE v1.0.1+
On-Board USB-C connector for programming. AP2112 3.3V Voltage Regulator. PTH Pads w/ Castellated Edges
Hardware Serial Connections. Includes UART (i.e. Rx and Tx), Qwiic Connector for I2C, and SPI. Has onboard Reset Button. Input maximum of 6V. Dimensions: 1.3in x 0.7in.
The AtMega32U4 can have the bootloader overwritten if not used properly. There is a way to fix the bootloader if needed and instructions are available online. USB drivers may be needed to be installed on a computer to communicate with the board.