Goodbye calibration! Digitization of pH test paper! This is a pH meter that reads the color of the pH test paper.
Project showcase by hminowa
An Arduino Nano used as an IO expander on I2C for ESP8266. For example, add 8 digitals IO and 6 analog inputs.
Project tutorial by Joel Soranzo
In this tutorial, I am going to talk about the PCF8574 8-bit GPIO port extender.
Improved version of the soldering iron controller for Hakko 907 iron.
To simplify building the controller, LCD screen is implemented.
Project tutorial by Alexander
Need fast cheap laser rangefinder for your Arduino project? You can use a laser tape measure for this!
Project tutorial by iliasam
The soldering iron controller based on arduino that implements PID method to keep the temperature of the iron.
The software library to calculate moon age, sunrise and sunset time.
Step by step approach is followed so that any hobbyist or design engineer can have a better understanding of the basic concepts.
Project showcase by Team Shailza
FreeRTOS, simple, easy, robust, and optimised for Arduino IDE. Using FreeRTOS Semaphores to share and protect physical resources.
by Phillip Stevens
The Companion IC is a very cool looking Clock + Ohmmeter + Capacitance Meter + Diode Tester!
Project tutorial by Srijal Poojari
Tutorial of Shift Register 74HC595, drivers like ULN2803, UDN2981, transistor BC327, making your designs more robust and reliable!
A programmable, portable, rechargeable power supply based on Arduino featuring an OLED display for viewing V.I.P. of projects/prototypes.
Project tutorial by Shahariar
Measure rotation speed (RPM) with Optocoupler and Encoder disk and Arduino - Quick and Easy!
by Boian Mitov
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
Control your Commodore C-64, reset C64, select Kernal, BASIC and Charset ROM, SD2IEC device#, info display.
Project tutorial by Oe7Twj
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!
Project tutorial by Boian Mitov
On this simple tutorial, we will explore how to discover colors using an Arduino and the TCS 3200 sensor, displaying it on an LCD.
Project tutorial by MJRoBot
A homemade semi-automatic antenna tuner for HF controlled by an Arduino Nano.
Project showcase by ok1fig
This project is all about making a power inverter using arduino. The Inverter produces 220VAC from 12V battery.
Project tutorial by Team Shailza
Get accurate readings for voltage using arduino.
Project tutorial by RoboCircuits
Did your somewhat expensive ($50) soldering iron just die? Well then fix it with another one!
Project tutorial by NoraTheDoggo
Your personal universal electronics kit. More I/O pins. More devices. More distances. Remote wireless control. No bunch wires.
Project tutorial by Steve Massikker
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.
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