Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.

AceButton levels for LadderButtonConfig

16 Dec, 2021
With the help of certain modules, it is possible to use multiple buttons connected to a single pin in your Arduino project. To make the process of reading button clicks more convenient, there is a...

Arduino: white boxes on line 1 and 3, LCD 20x4

15 Dec, 2021
An error where 2 lines out of 4 are having a white background. There is an easy solution for having this problem where 1 and 3 lines are showing white blocks. The lcd is actually 2 lines of 40...

Arduino: Turn Relay On and Off with Push Button

12 Sep, 2020
Turn a relay on and off using a push button. When using a pushbutton, you have use a library (don't reinvent the wheel) to control the push button signal. It's called a debounce, taking account in...

Controlling 220v using Arduino relay board

20 May, 2014
This guide shows how to control 220 / 230 V using relay board. This is a general board 5v relay that can control 250V AC, 125V AC, 30V DC or 28V DC.

Simple LED light up with Arduino

25 Jan, 2013
Simple LED light up with Arduino. I have just connected LED lamp to 5 volts. Also I added a resistor that is 1k Ω. This is the first thing I did with my Arduino when I bought it. Basically you don't...

Arduino Light Sensor Circuit Tutorial

10 Dec, 2011
Arduino light sensor circuit tutorial shows how to connect light sensor to Arduino and how to use it in your programs. Light sensor measures light intensity and you can read it with Arduino using an...