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

Arduino Uno or Nano 6 MHz Frequency Counter with LCD. As accurate as the crystal.

VB6 app to connect Arduino Uno ports to Windows PC

Connect up to 10 buttons using a single interrupt.

How to make a cable that can connect your Arduino board to a TV RCA video jack. Put your Arduino on the big screen!

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

Simple Arduino Uno - ESP8266 software serial integration.

In this tutorial, I will show you how to install the dark theme for your Arduino IDE for the reason of overexposure to the screen light.

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

This experiment will reveal ability measuring of Humid sensor DHT22, SHT21, BME280. Also mention about how to calibrate them

Morse Code decoder that can adjusts to LED bright level and demonstrates how to implement timer interrupt.

Android device controls Arduino's inputs and outputs using USB and serial protocol.

Improved serial debugging, with debug levels and simple software debugger, to see/change global variables, add watch, or call a function.

An after-work project conjures you out of the box a precise clock on the windowsill with inexpensive components

Controls cursor using a simple joystick

A one button interface for a "Hour" countdown timer that uses a 3 digit binary number to select times other than an hour.

Use of a simple instrumentation method (based on Arduino and Excel) to acquire, monitor and store PV system data in real-time.

This project presents a simple virtual instrument system based on LabVIEW and Arduino to characterize and monitor a PV panel.

Easily send commands from Python3 versions to Arduino.

Introduction to watchdog timer in microcontroller

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

Based on Blockly and BlocklyDuino, here's a multilingual enhanced version with supervision, upload, multi-level blocks, etc.

Work with AT Commands using your SIM800L module.

Logic Analyzer, for Arduino, other AVR and STM32 with a very nice working processing interface, you could run it also on any Android device.