Sketch of transistor tester project from Karl-Heinz Kübbeler, so it's much simpler to study, modify, verify and upload to an Arduino.

With modern I2C Protocol for the LCD, minimizing the wiring. A Basic Version with the UNO and a feature rich Version with the MEGA2560.

A general tutorial on installing Arduino bootloader on ATmega8 AVR microcontroller and programming it using Arduino IDE.

Extension to Ben Eater's breadboard computer that allows saving/loading programs and works as a monitor, assembler and disassembler.

Get not only 5 volts but also 9, 12 volts (18 Watts max) out of any QC-compatible charger/power bank for supplying power hungry projects.

When it sees you, it won't stop following!

Connect up to 10 buttons using a single interrupt.

In this tutorial I will explain how to use the TIMER0 of Arduino

More complex microcontroller projects often require a menu-driven interface. This library for XOD can help autogenerate them from a diagram.

This Arduino-powered Web Oscilloscope supports trigger, and changing voltage/div, offset and time / div. It supports 6 channels.

Thermistor as thermometer.

A programmable, portable, rechargeable power supply based on Arduino featuring an OLED display for viewing V.I.P. of projects/prototypes.

A voltage to frequency converter can realize an opto-isolated analog input for Arduino or other microcontroller systems.

How to make a benchtop pH meter with an Arduino Uno and the Gravity analog pH sensor from Atlas Scientific.

Add an external S-meter on any Icom amateur radio transceiver that has a CI-V control port.

Create a digital watch for Arduino combined with a 16x2 LCD Keypad Shield and using YAKINDU Statechart Tools.

You need to send a command to Arduino.

This library creates an 8-bit IO port for Arduino by combining any 8 Arduino pins. With this library, one can send/get direct 8-bit data.

This project uses an ultrasonic distance sensor to create a pocket of wave interference where a small object can be levitated.

Arduino is used to measure frequency and duty cycle of pulses and display them on LCD.

Introduction to watchdog timer in microcontroller

Equipped with a keyboard, Ethernet Shield and LCD monitor, is able to execute built-in command and even to send command to a telnet server!

A sensor that recognizes the name of the color of an object based on light sensing and a neural network that learned from previous examples.

A small tutorial project that tells you what direction your joystick is pointing in when you push it.