For more information about the differences between the boards, make sure to pull up the schematic for both
boards and read further below!
The Pinout
All of the Qwiic Pro Micro's I/O and power pins are broken out to two, parallel headers. Some pins are for power
input or output, other pins are dedicated I/O pins. Further, the I/O pins can have special abilities, like analog input.
Here's a map of which pin is where, and what special hardware functions it may have:
Click on image for a closer view
Power
There are a variety of power and power-related nets broken out to connectors and through hole pads. Each pad
has a castellated edge. The back of the board also has the USB pins broken out for power.
Castellated Power and Reset Pins
USB Power Pins
These nets consist of the following:
V
is the voltage provided from the USB connector.
RAW
is the unregulated voltage input for the Qwiic Pro Micro. If the board is powered via USB (i.e.
V
), the
voltage at this pin will be about 4.8V (USB's 5V minus a Schottky diode drop). On the other hand, if the
