Tutorials

I2C is a popular device protocol in communicating with microcontrollers. However, this protocol is not limited to Arduino, PIC and STM32; the Raspberry Pi can also use I2C.

In Arduino programming, we learn about functions setup() and loop(). Any code inside setup() executes once while code inside loop() executes again and again until the next reset. Now what if while inside the loop(), something went wrong either in code or in hardware? Normally we just press the reset …

A seven segment display has one pin for each of its seven segments. This means if directly interfaced with a microcontroller, you will need at least seven pins. Fortunately, there is a way to use four seven segment displays and using only four pins from your Arduino.

Measuring an object’s weight can sometimes be part of a bigger project. And unless you have a good reason, you wouldn’t want to use an analog weighing scale. A digital weight sensor is easier to interface with, not to mention its accuracy and durability against an analog weight sensor. In …

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.

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 programming hardware. Arduino has its limitations, but the platform helps create tons of electronic projects even for non-engineers. …

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

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 share how I send SMS with the Raspberry Pi.