This tutorial demonstrates the repair of an Adafruit nRF52840 Feather Express board with a defective LiPo charge controller.
This CircuitPython tutorial demonstrates how to build a battery powered Bluetooth BLE remote control to operate a BLE peripheral that hosts a solenoid and a spectrally selective light detector.
This tutorial demonstrates how to add Internet access to an nRF52840 board running CircuitPython by using an ESP32 as a WiFi co processor.
This tutorial demonstrates how to use character LCD and color TFT displays on the nRF52840 with CircuitPython. It will explore the DisplayIO library and use Bluetooth low energy to interact with LCD displays from a mobile phone.
This tutorial demonstrates how to flash CircuitPython onto an inexpensive nRF52840 dongle using OpenOCD and a Raspberry Pi. The Bluefruit LE Connect app will also be used to control the dongle from a mobile phone using BLE.
A quick introduction to CircuitPython. A Raspberry Pi will be used to load the bootloader on a Nordic nRF52840 board and run the Mu IDE. Adafruit Blinka will also be used to demonstrate code compatibility between the Pi and the microcontroller. Code demos include GPIO and BLE.