Welcome to the final instalment of my 8 DI Optically Isolated Arduino Shield. Today I will show you some of the assembly pictures, as well… Read More »Build your own 8 DI Optically Isolated Arduino Shield – Part 3
In this part of my LoRa Series ( Part 3 ) I will look at some basic code for the Heltec LoRa 32 V2 Module.… Read More »Multiple LoRa Device Communication
So many people asked me which Lora Module I use for my projects. In this part of the series, I will show you, as well… Read More »LoRa – Part 2
Introduction When designing IoT solutions, we all encounter the problem of connecting our device(s) to each other, either directly, or through the internet. In Urban… Read More »What is LoRa?
While working on a recent project, using a custom version of the ESP32, I had a particular need to be able to update the firmware… Read More »ESP32/ESP8266 WiFi Config and OTA on Demand
Today I will show you another useful IO Expander chip, The MCP23017. This chip, although similar to the PCF8475, which I have already covered in… Read More »Using the MCP23017 to increase your GPIO’s
Using a matrix keypad is a very easy way to add multiple control buttons to a project, be it to enter a password, or to… Read More »Using I2C with a 4×4 Matrix Keypad
In this tutorial, I’ll show you some of the important and frequently used ESP8266 AT Commands or AT Instruction Set. ESP8266 WiFi Module offers… Read More »ESP8266 and ESP32 AT Commands
Introduction The Serial Peripheral Interface is a synchronous serial communication interface for short-distance communication, it is typically used in embedded systems. The interface was developed… Read More »What is SPI? Serial Peripheral Interface – Part 1
Introduction Adding a display to any project can instantly increase its visual appeal, as well as make the project easier to control. Displays available to… Read More »The OLED Display