User Manual

Top Row

#0 / RX - GPIO #0, also receive (input) pin for Serial1 (hardware UART)

#1 / TX - GPIO #1, also transmit (output) pin for Serial1

#2 through #12 - These are general purpose GPIO. If there's a dot next to the pad it can act as a PWM output.

#13 - GPIO #13 and is connected to the red LED marked L next to the USB jack. Also PWM output.

SDA - the I2C (Wire) data pin. There's no pull up on this pin by default so when using with I2C,

you may need a

2.2K-10K pullup.

SCL - the I2C (Wire) clock pin. There's no pull up on this pin by default so when using with I2C,

you may need a

2.2K-10K pullup.

Bottom Row

A0 - This pin is analog

input

A0 but is also an analog

output

due to having a DAC (digital-to-analog converter).

This is the first DAC, and is 'independent' of A1. You can set the raw voltage to anything from 0 to 3.3V, unlike

PWM outputs this is a true analog output

A1 - This pin is analog

input

A1 but is also an analog

output

due to having a DAC (digital-to-analog converter).

This is the second DAC, and is 'independent' of A0. You can set the raw voltage to anything from 0 to 3.3V,

unlike PWM outputs this is a true analog output

A2 thru A5 - These are each analog input as well as digital I/O pins.

Right side

SCK/MOSI/MISO - These are the hardware SPI

pins, are are connected to the 2x3 header on the

right hand side. you can use them as everyday

GPIO pins (but recommend keeping them free as

they are best used for hardware SPI connections

for high speed.)

Additional analog inputs

In addition to the A0-A5 pins, there are extra analog inputs available. There's not a

ton

because we ended up going

with prioritizing the PCC camera peripheral pins rather than try to stuff as many analog inputs as possible

SDA is also A6

SCL is also A7

These pins are available in CircuitPython under the board module. Names that start with # are prefixed with D and

other names are as is. So #0 / RX above is available as board.D0 and board.RX for example.

Parallel Capture Peripheral

There's a 'camera' input peripheral you can use with some camera chips to capture video with 10-bit data width. We