Use the IO Expander and Relay Expander with the Arduino to control up to 65,280 relays!
Project tutorial by Christian
Improved version of the soldering iron controller for Hakko 907 iron.
To simplify building the controller, LCD screen is implemented.
Project tutorial by Alexander
In this tutorial, I am going to talk about the PCF8574 8-bit GPIO port extender.
Make a cheap variable power supply using the buck converter.
Project showcase by Neeraj Rane
The Companion IC is a very cool looking Clock + Ohmmeter + Capacitance Meter + Diode Tester!
Project tutorial by Srijal Poojari
Make a Linux distribution that is focused on the development of Arduino and IoT. It's a Distro for Arduino.
Project showcase by CESARMASSARI
A study for a linear measuring device with Arduino and photoelectric rotary encoder.
Project tutorial by fmarzocca
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.
Dear friends welcome to another tutorial! Today we are going to learn how to use this analog voltmeter with Arduino.
Project tutorial by Nick Koumaris
ESP8266 Arduino Programming Tutorial - Easy to learn, step by step.
Track display for a Commodore 1541 floppy drive (retro hardware).
Project showcase by Oe7Twj
Connect Matrix Keyboard using only 2 Arduino pins by using PCF8574/PCF8574A I2C GPIO - Quick and Easy!
Project tutorial by Boian Mitov
Control your Commodore C-64, reset C64, select Kernal, BASIC and Charset ROM, SD2IEC device#, info display.
Project tutorial by Oe7Twj
Using the built-in Arduino EEPROM to save and restore values - Quick and Easy.
by Boian Mitov
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.
Arduino Nano and Visuino: Convert Acceleration to Angle From Accelerometer and Gyroscope MPU6050 I2C Sensor - quick and easy.
Tutorial of Shift Register 74HC595, drivers like ULN2803, UDN2981, transistor BC327, making your designs more robust and reliable!
A maker kit designed for Egyptian girls who want to learn electronics.
Project showcase by Ethafa
Control a relay connected to Arduino with an infrared remote - quick and easy.
Embedis is a library for creating simple embedded key-value servers using non-volatile storage like NVSRAM, FRAM, FLASH, or EEPROM.
by Team thingSoC
I built the right and left mouse buttons with wall switches.
In this project, you can measure typically up to 48V. It is recommended to use Arduino digital voltmeter as “0-48V DVM”.
Project showcase by KumarB
Measure rotation speed (RPM) with Optocoupler and Encoder disk and Arduino - Quick and Easy!
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