LiPo Charge Controller Repair Tutorial
This tutorial demonstrates the repair of an Adafruit nRF52840 Feather Express board with a defective LiPo charge controller.
CircuitPython BLE Client & Server Tutorial
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.
UEFI BIOS Repair Tutorial
This tutorial demonstrates the repair of a PC with a damaged UEFI BIOS. The flash chip is removed from the computer. Data from the recovered firmware is transferred to a new BIOS hex file extracted from a capsule. The existing chip is reprogrammed and reinstalled in the motherboard.
Insteon PLM Repair Tutorial
In this quick tutorial I’ll repair an Insteon PowerLinc modem. The PLM is a USB home automation interface that connects to a computer such as a Raspberry Pi and can be used to operate lights, electrical devices, thermostats, monitor sensors and more.
CircuitPython nRF52840 ESP32 WiFi Tutorial
This tutorial demonstrates how to add Internet access to an nRF52840 board running CircuitPython by using an ESP32 as a WiFi co processor.
CircuitPython nRF52840 LCD Displays Tutorial
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.
CircuitPython nRF52840-dongle OpenOCD Pi Tutorial
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.
CircuitPython nRF52840 & Pi Tutorial
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.
Retro EPROM Programming Tutorial
This retro tutorial demonstrates how to get an old EMP-20 EPROM programmer from the mid 90’s up and running using an early Windows 95 laptop in order to burn a cart for a vintage Bally video game console.
Repair ESP32 boards and serial testing with Raspberry Pi
In this quick tutorial I’ll fix 2 dead ESP32 boards and also show how to use serial communications between a Raspberry Pi and an ESP32.