Adafruit Feather M4 Express by lady ada published July 11, 2018, last edited January 22, 2025 last major update July 27, 2022 posted in Arduino Compatibles CircuitPython Feather/ Feather Boards 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 Update the UF2 Bootloader Pinouts Assembly Power Management Arduino IDE Setup Using with Arduino IDE Adapting Sketches to M0 & M4 What is CircuitPython? CircuitPython on Feather M4 Express Installing the Mu Editor Creating and Editing Code Connecting to the Serial Console Interacting with the Serial Console The REPL CircuitPython Libraries Frequently Asked Questions Welcome to the Community! Advanced Serial Console on Windows Advanced Serial Console on Mac "Uninstalling" CircuitPython Troubleshooting CircuitPython Essentials CircuitPython Pins and Modules CircuitPython Built-Ins CircuitPython Digital In & Out CircuitPython Analog In CircuitPython Analog Out CircuitPython PWM CircuitPython Servo CircuitPython Internal RGB LED CircuitPython NeoPixel CircuitPython DotStar CircuitPython UART Serial CircuitPython I2C CircuitPython HID Keyboard and Mouse CircuitPython CPU Temp CircuitPython Storage CircuitPython Expectations UF2 Bootloader Details Downloads Single page Feedback? Corrections? Text View Primary Products Adafruit Feather M4 Express - Featuring ATSAMD51 $22.95 Add to Cart Featured Products view all Stacking Headers for Feather - 12-pin and 16-pin female headers $1.25 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 Lithium Ion Polymer Battery - 3.7v 500mAh $7.95 Add to Cart Lithium Ion Polymer Battery - 3.7V 350mAh $6.95 Add to Cart 136 Beginner Product guide 😍 1 🔥 1 Downloads Datasheets ATSAMD51 details (the main chip on the Feather M4) Fritzing object in the Adafruit Fritzing Library EagleCAD PCB files in GitHub 3D Models on GitHub PDF for Feather M4 Express Board Diagram on GitHub SVG for Feather M4 Express Board Diagram > Your browser does not support the video tag. Schematic & Fab Print Pinout Diagram Image courtesty of Bill Binko at ATMakers. PDF version is available below. Feather_M4_Pinout.pdf Feather_M4_Pinout.svg Page last edited March 08, 2024 Text editor powered by tinymce. UF2 Bootloader Details