ESP32 MAX7219 WiFi Message Board
This ESP32-powered project allows you to write messages to a MAX7219 LED matrix display using your smartphone Scaled up, this can be used as a WiFi message board for schools or...
ESP32 Magnetometer using HMC5883L
For this article, I will show you how to use an ESP32 microcontroller as a magnetometer - a device that measures the direction and strength of a nearby magnet In the absence of a...
WiFi Servo Controller using WeMos D1 Mini
In this article, I will guide you to the steps on how to build a WiFi servo controller project using the WeMos D1 Mini ESP8266 breakout board ...
How pinMode, digitalWrite and digitalRead Work
I believe what makes Arduino popular is how it makes microcontrollers easier to use I remember the time when I have to spent hours coding a project and then spend money on...
ESP32 Turbidity Sensor
The ESP32 has become one of my favorite microcontrollers as it's compact, relatively cheap, and contains 125% higher memory than an Arduino UNO ...
How to Send SMS with Raspberry Pi
It’s 2020 and sending SMS is now an old technology But such technology remains to be a cheap and indispensable way to communicate over long distances In this article, I will...
Ultrasonic Sensor and Temperature Compensation
If you've been using Arduino, you might have used or have heard about the ultrasonic sensor Most of us use it for level/distance measurement while some use it to detect an...
MQ-135 Air Quality Sensor Tutorial
The MQ-135 “air quality” sensor is part of the MQ series of gas sensors that uses a chemical-sensitive element The resistance of such elements varies when exposed to certain...
Sensor Display on ESP32 Web Server
Last time, I showed you how to setup the ESP32 development board with the Arduino programming environment This time, I will be building a simple ESP32 web server where data from a...
Using ESP32 (NodeMCU-32S) Board for the First Time
The ESP32 expands the capabilities of the popular ESP8266 WiFi microcontroller by using a 32-bit microprocessor, and adding Bluetooth 42 among others What possible...
