The software library to calculate moon age, sunrise and sunset time.

How to make projects more robust and reliable using drivers ULN2803, UDN2981 and PNP transistors.

Measure rotation speed (RPM) with Optocoupler and Encoder disk and Arduino - Quick and Easy!

Easily connect Arduino boards at a great distance over RS485 with Visuino.

In this project, I am going to make a LAN cable tester with just a few basic electronics components. It cost me just a bit over $3.

Using the built-in Arduino EEPROM to save and restore values - Quick and Easy.

Three different way of connecting a push button with an Arduino microcontroller.

Build a treasure chest or use an existing storage box, attach a push-button quadrature rotary encoder (endless spinning dial) and lets go!

This is my 4th tutorial on how to drive a RELAY (not a relay module) with an Arduino.

ESP8266 Arduino Programming Tutorial - Easy to learn, step by step.

In this tutorial, I am going to talk about the PCF8574 8-bit GPIO port extender.

Embedis is a library for creating simple embedded key-value servers using non-volatile storage like NVSRAM, FRAM, FLASH, or EEPROM.

Today we are going to learn about touch switch based on TTP223.

I built the right and left mouse buttons with wall switches.