Projects

When working with IoT, it’s often necessary to track a device’s location for monitoring. Global Positioning Service (GPS) remains the number 1 option for large-area tracking. This project will show you how you can use a GPS with an ESP32 and have the location plotted on Google Maps.

For this project, I am using an HC-SR04 ultrasonic sensor for opening a solenoid door lock. Basically, the ultrasonic sensor acts as a proximity detector. A solenoid lock triggers when an object blocks the sensor at a given distance. In addition, a web app can act as WiFi remote control …

This project makes the “dots” on a dot matrix look like they are pebbles in a container. Tilt the device on one side and the dots fall toward that side. The same goes if the device tilts to the other side.

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 signages for businesses.

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 nearby magnet, the device detects the Earth’s magnetic field. Hence, a compass is a type of …

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.

The ESP32 has become one of my favorite microcontrollers as it’s compact, relatively cheap and contains 125% higher memory than an Arduino UNO.

Introduction This week’s Arduino project is a classic one and ideal for beginners. Here I will be showing how to build a simple clap switch for a RGB LED strip. Basically, a microphone captures the sound of the clap and converts it to a voltage. The Arduino processes that voltage …

Flame sensors are found from the simplest gas stoves to huge industrial plants. There are different types of fire sensors — some cheap, some expensive. Yet they’re all built for one single purpose: detect fire. In this article, I will guide you on how to build a flame sensor with …

In general terms, a magnetometer measures the magnetism of objects or places. In fact, a compass is a type of magnetometer. This project demonstrates how to use the HMC5883L magnetometer as a compass with an Arduino microcontroller.