In this tutorial, I’ll explain how an optocoupler works and how to build a tachometer or rpm counter using an optocoupler with Arduino.
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Category: D.I.Y
Make your own Thermogun using arduino and mlx90614
let’s start make our own thermogun. In this tutorial I will make thermogun using temperature sensor MLX90614 and arduino nano. Also OLED display to display…
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How to use MAX7219 LED matrix (running text, display sensor data, add more LED matrix with Arduino)
In this tutorial we will learn how to use MAX7219 LED matrix with an Arduino. We will try to print text, Give the text an…
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RFID Reader with NodeMCU (RC522)
In the previous tutorial, I have made how to use the RC522 RFID reader with Arduino. In this article, I will make a tutorial on…
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MFRC522 RFID Reader With Arduino Tutorial – The Simplest way to read RFID tag
MFRC522 is maybe the cheapest RFID Reader that we can find now. It uses a 13.56 MHz frequency And it is also easy to use.…
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DIY Vending Machine with Arduino
This is companion article for my YouTube video about how to make DIY Vending Machine using arduino and Coin Acceptor. This Vending machine works like…
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How to draw or print bitmap to OLED display arduino
This is actually continued from my previous article about how to use OLED display arduino – How to write text, draw shapes and draw bitmap. You…
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How to use GPS with arduino – GPS NEO 6M tutorial
GPS is kind popular right now. Many modern devices use this for tracking purposes or just help you navigate when you are lost. GPS Neo…
View More How to use GPS with arduino – GPS NEO 6M tutorialHow to use relay with arduino
Relay is switch that can be controlled with electronics controller such as microcontroller or arduino. so if you want to connect or disconnect a circuit…
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Coin Acceptor or Coin Sensor Tutorial with Arduino
This Coin Acceptor works by compare the coin that already inserted in this sensor (blue color at sensor) with the coin that inserted at the front hole. If the coin is the same, the coin will accepted, but if coin is different, the coin will be rejected.
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