Adafruit Feather nRF52840 Sense by Kattni Rembor published March 11, 2020, last edited January 22, 2025 last major update January 24, 2024 posted in Sensors Feather Internet of Things - IOT/ Bluefruit / BLE 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 Bootloader Use UF2 Use Arduino IDE Use Command Line Pinouts Power Management Arduino Support Setup Arduino Board Testing Arduino Sensor Example Arduino BLE Examples Advertising: Beacon BLE UART: Controller Custom: HRM BLE Pin I/O Central BLEUART Dual Roles BLEUART Custom: Central HRM Arduino Bluefruit nRF52 API AdafruitBluefruit BLEGap BLEAdvertising BLEScanner BLEService BLECharacteristic BLEClientService BLEClientCharacteristic BLEDiscovery BLEDis BLEUart BLEClientUart BLEBeacon BLEMidi BLEHidAdafruit BLEAncs BLEClientCts BLECentral nRF52 ADC CircuitPython on Feather Sense Feather Sense CircuitPython Libraries CircuitPython Pins and Modules CircuitPython Sense Demo Welcome to CircuitPython Getting Started with BLE and CircuitPython CircuitPython Essentials Software Resources Downloads Using nRF52840 SPI on Battery Power FAQs Single page Feedback? Corrections? Primary Products Adafruit Feather nRF52840 Sense $39.50 Add to Cart Featured Products view all Adafruit Feather nRF52840 Sense $39.50 Add to Cart USB C to Micro B Cable - 3 ft 1 meter $3.50 Add to Cart USB cable - USB A to Micro-B $2.95 Add to Cart Stacking Headers for Feather - 12-pin and 16-pin female headers $1.25 Add to Cart Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh $6.95 Add to Cart Lithium Ion Polymer Battery - 3.7v 2500mAh Out of Stock 55 Beginner Product guide Welcome to CircuitPython Page last edited March 10, 2020 Text editor powered by tinymce. CircuitPython Sense Demo Getting Started with BLE and CircuitPython