For the next part of the series on Raspberry Pi, I will show how to produce a PWM signal from a pin. Moreover, I will show you how to control single and multiple servo motors in this Raspberry Pi PWM tutorial.

The Raspberry Pi is a Linux computer. But unlike most desktop and laptop Linux computers, users have access to a row of pins that can be used as inputs or outputs. These 40 pins are called GPIO (General Purpose Input Output) pins. This Raspberry Pi GPIO tutorial aims to help …

A RGB LED is a special light-emitting diode that can produce 16 million possible colors, all by combining the colors red, green, and blue in varying intensities. This tutorial will show you how to use a RGB LED with Arduino. Introduction to RGB LEDs RGB LEDs typically have four pins …

Turbidity refers to the haziness of a fluid caused by the increased number of very tiny particles which, individually, is invisible to us. Moreover, turbidity measurement is important in testing the quality of water. This Arduino turbidity sensor tutorial provides a guide on how to implement this setup using a …

How can an Arduino capture sound? Just like how your computer captures sound: through a microphone. In this Arduino microphone tutorial, we’ll look at how a sound sensor works. Also, we’ll build a simple clap switch project as an example of how to use a microphone with Arduino.

Last time I featured DFRobot’s Bluno M0, an Arduino-compatible board with embedded Bluetooth chip. Now, I will write about the Bluno M3, an STM32-powered board that strikingly looks similar to the M0. Is it the same board or does it offer more?

The classic parallel LCD sometimes poses a problem for projects that use a lot of Arduino pins. The least amount of pins you can use is six, excluding the power pins and the potentiometer contrast adjust (optional) pin. Thankfully, by using an I2C LCD "backpack", the pin use can be …

This project demonstrates how to send data to ThingSpeak using a SIM800L breakout board. The data will be coming from a BMP085 atmospheric pressure sensor and will be using the SIM800L GPRS connection to publish this data to ThingSpeak.

I made this project because it seems a lot of people are having trouble with interfacing the SIM800L with an Arduino, particularly in connecting to a network. Here, I made a simple setup where I was able to display the signal level and the network status on an LCD. This …

This Arduino LiPo battery monitor and charger feature the TP4056 breakout board. The voltage level of the battery is displayed on a Nokia 3310/5110 LCD with the Arduino Nano as the microcontroller. Materials Arduino Nano TP4056 Breakout Board Nokia 3310/5100 LCD 3.7 V LiPo Battery Connecting Wires and Breadboard Introduction The …