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

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

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

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

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

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

Control 256 relays! Seeing is believing!

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

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

An arduiNOOB friendly tutorial for beginners on daisy-chaining.

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

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

Writing only Arduino code, it is easy to set up control over experiments and display results on the VirtualPanel Windows application.

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

A useful tool for accurately measuring long distances.

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

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

Standalone PC software to use your Arduino as an oscilloscope, supports up to eight channels, at rates up to 100 kHz.

Simple to build and useful instrument for your lab.

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

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.

Oscilloscope for Android device and Arduino.

Need to control hundreds of relays with your Arduino, ESP8266, Pi, PC or Mac and activate them simultaneously within < 1 ms time window?

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