Materials list

Main parts

• 1x Seeed Studio XIAO ESP32S3 Sense
• 1x 3.7V LiPo battery
• 1x SSD1306 128x32 OLED display, I2C, address 0x3C
• 1x momentary button for shutter
• 1x 1k potentiometer
• 1x power switch
• wires
• 10x M3 screws

What the user needs to wire

Thinking specifically about the Seeed Studio XIAO ESP32S3 Sense, these are the main external Pixela connections.

1. Main shutter button

• D0 / GPIO1 -> SHUTTER button
• other side of the button -> GND

Important detail:

• the firmware uses INPUT_PULLUP
• this means the button works with inverted logic: released = HIGH, pressed = LOW
• the same button is also used as the wakeup button from sleep

2. Navigation potentiometer