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.
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.
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.
This tutorial demonstrates repairing a PC that was bricked by a failed BIOS upgrade using FlashRom on a Raspberry Pi to program the new firmware directly onto the motherboard’s serial flash chip.
In this tutorial a LoBo MicroPython WebSocket server will broadcast temperature data from a DS18b20 sensor connected to an ESP32. A web page built with React and MobX State Tree on a Raspberry Pi will be the client.
This MicroPython tutorial demonstrates utilizing the ESP32’s built-in capacitive touch sensors. A simple music player is constructed utilizing a JQ6500 MP3 module connected to an ESP32 via serial communication. The touch interface provides feedback by using pulse width modulation to vary LED brightness.
This MicroPython tutorial demonstrates how to connect and drive a color SSD1351 OLED display using an ESP32. It also includes using the ADC to read analog signals and FTP for file transfers.
This tutorial demonstrates how to set up a MicroPython web server on an ESP32. A web page will show the temperature and humidity from a DHT22 sensor connected to an ESP32. Another web page will provide remote color and brightness control of a NeoPixel RGB LED.
This tutorial demonstrates how to connect a DHT22 temperature and humidity sensor to an ESP32 running MicroPython. The sensor data is transmitted wirelessly to a Raspberry Pi using MQTT protocol and the results are displayed on I²C OLED display.