Introducing Adafruit Feather RP2040 by Kattni Rembor published March 05, 2021, last edited January 22, 2025 last major update July 27, 2022 posted in Adafruit Products CircuitPython Feather/ Feather Boards STEMMA Save New Favorite × Please sign in to include this guide in your list of favorites. You will be redirected back to this guide once you sign in, and can then save this guide as one of your favorites. Download Overview Pinouts Assembly Power Management Install CircuitPython Installing the Mu Editor Creating and Editing Code Connecting to the Serial Console Interacting with the Serial Console The REPL CircuitPython Pins and Modules CircuitPython Libraries Frequently Asked Questions Welcome to the Community! Advanced Serial Console on Windows Advanced Serial Console on Mac Troubleshooting CircuitPython Essentials Blink Digital Input Built-In NeoPixel LED CPU Temperature Arduino IDE Setup Arduino Usage Blink I2C Scan Test FAQ Downloads Single page Feedback? Corrections? LLM Markdown View Primary Products Adafruit Feather RP2040 $11.95 Add to Cart Featured Products view all Mini SWD 0.05" Pitch Connector - 10 Pin SMT Box Header $1.95 Add to Cart SWD 0.05" Pitch Connector - 10 Pin SMT Box Header $1.50 Add to Cart Header Kit for Feather - 12-pin and 16-pin Female Header Set $0.95 Add to Cart Short Headers Kit for Feather - 12-pin + 16-pin Female Headers $1.50 Add to Cart Stacking Headers for Feather - 12-pin and 16-pin female headers $1.25 Add to Cart STEMMA QT / Qwiic JST SH 4-pin Cable - 100mm Long Out of Stock 162 Beginner Product guide FAQ My I2C is not working in Arduino. What's going on? You may have the wrong setup! The Feather RP2040 uses Wire1 for I2C in Arduino. Page last edited March 08, 2024 Text editor powered by tinymce. I2C Scan Test Downloads