Content for 20x4 LCD

20x4 LCD

This is a basic 20 character by 4 line display. Utilizes the extremely common HD44780 parallel interface chipset (datasheet). Interface code is freely available. You will need ~11 general I/O pins to interface to this LCD screen. Includes LED backlight.

Handheld BASIC computer in Badge Format with the Arduino Uno

“Since the new 32-Bit Arduino Uno R4 has arrived, it is time to make a glorious farewell project to the classic 8-Bit UNO R3, by using all the pins and turning it into a handheld BASIC computer, quite similar to …

Using WiFi to Monitor Sensor Data

“This tutorial will show you how setup a simple peer-to-peer connection to send and receive sensor data between two ESP32 WiFi boards. Introduction We’re all familiar with WiFi. It runs our home, let’s us stream our favorite movies …

Smart Air Quality Monitoring System

“The aim of this project is to design and implement an air quality monitoring system. This project activates actuators to be able to maintain better air quality around us. This project can be used in our houses, warehouses, and greenhouses …

Radio Alarm Clock - Full build Tutorial (open source)

“Even if you’re a beginner you’ll be able to build this COOL Radio Alarm Clock loaded with useful features. This is a project I designed and built from scratch. The Software and Hardware are provided as Open Source …

Mini serial console with three different serial ports

“This is my “poor man’s HID” that I want in my projects to enter data and display messages. Story It is a simple serial console that can be used for data display and data input. It can handle three …

Environmental Toolkit for an Ecological Area V2.0

“Air pollution has a number of negative impacts on the environment, including damage to human health and natural ecosystems. The World Economic Forum has stated that air pollution is the ‘deadliest form of pollution’, while the World Health Organization claims …

Project  Superquiz!

Superquiz!

“My first real project with Arduino, I had a few things to learn on the way and still plenty more to do! I have commented as much as I feel needed so you should be able to easily modify the …

Wooden RPN Calculator

“A RPN (Reverse Polish Notation) calculator of billet walnut case. There are multi-functional RPN calculators with numbers of small keys. However, daily use RPN calculators with large and light touch buttons are rare. So I made it by my own …

Film Camera Tester

“The idea of using Arduino for measuring camera shutter timings is not new. What I’ve tried to do here, is to make a modular system with a set of features normally offered in professional testers, at the same time …

The 10 Euro IoT Computer With ESP 8266

“A little computer based on a datalogger shield, an ESP8266 dev board and a few other components running an IoT capable BASIC interpreter. The Idea This project is about building a small IoT computer running with BASIC with low cost …