The diagram below provides a general visual reference for wiring of the components once you get to the Assembly page. This diagram was created using the software package Fritzing.
Adafruit Library for Fritzing
Adafruit uses the Adafruit Fritzing parts library to create circuit diagrams for projects. You can download the library or just grab individual parts. Get the library and parts from GitHub - Adafruit Fritzing Parts.
Wired Connections
- Switch 1 to D4 pin on KB2040
- Switch 2 to D5 pin on KB2040
- Switch 3 to D6 pin on KB2040
- Switch 4 to D7 pin on KB2040
- Switch 5 to D8 pin on KB2040
- Switch 1-5 ground pin to ground pin on KB2040
- Rotary encoder to D2, D3 and Ground on KB2040
- Rotary switch to A3 and Ground on KB204
- Potentiometer 1 to A2, Ground and 3V pins on KB2040
- Potentiometer 2 to A1, Ground and 3V pins on KB2040
- Potentiometer 3 to A0, Ground and 3V pins on KB2040
- OLED STEMMA QT to STEMMA QT on KB2040
The Adafruit KB2040 is powered via USB.
Page last edited July 26, 2025
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