A quick and compact Arduino Nano setup with four DIP switches to allow for mode selection. Power is provided by CR2032 battery package.

Probably the most useful Arduino project I've ever made! A automatic tester for a product I sell.

Use the IO Expander and Relay Expander with the Arduino to control up to 65,280 relays!

Improved version of the soldering iron controller for Hakko 907 iron. To simplify building the controller, LCD screen is implemented.

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

The Companion IC is a very cool looking Clock + Ohmmeter + Capacitance Meter + Diode Tester!

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

On this simple tutorial, we will explore how to discover colors using an Arduino and the TCS 3200 sensor, displaying it on an LCD.

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

In this project, you can measure typically up to 48V. It is recommended to use Arduino digital voltmeter as “0-48V DVM”.

Control your Commodore C-64, reset C64, select Kernal, BASIC and Charset ROM, SD2IEC device#, info display.

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

Connect Matrix Keyboard using only 2 Arduino pins by using PCF8574/PCF8574A I2C GPIO - Quick and Easy!

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.

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

Track display for a Commodore 1541 floppy drive (retro hardware).

Arduino Nano and Visuino: Convert Acceleration to Angle From Accelerometer and Gyroscope MPU6050 I2C Sensor - quick and easy.

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

A study for a linear measuring device with Arduino and photoelectric rotary encoder.

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

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

Make a Linux distribution that is focused on the development of Arduino and IoT. It's a Distro for Arduino.

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

A maker kit designed for Egyptian girls who want to learn electronics.