This project uses two Arduino Uno boards communicating via the I2C protocol. One acts as the master and the other as the slave, forming an alarm system using a PIR motion sensor, LEDs, and buzzers.

Using motion detectors and an Ardunio you can add a little extra wow to your Halloween displays this year. This article covers the circuits and the code to make that happen.

In this article, I have added three sensors with Arduino UNO and user can choose the required sensor with the help of keypad.

It’s a fairly simple project, too: just hook an Arduino Uno up to a motion sensor and an electronic switch called a relay, then plug in your fan, and you’re good to go.

Build a simple LPG gas leakage detector using Arduino and MQ-5 sensor. This beginner-friendly project features buzzer and LED alerts, circuit diagram, and complete Arduino code for home safety.

Contribute to Naseer1808/Motion-Sensor-With-Voice-Alarm-Using-Arduino-Uno development by creating an account on GitHub.

Build a Speed Sensor using Arduino with IR speed sensors to accurately measure the speed of moving objects. This tutorial covers circuit design, sensor calibration, speed calculations, and optimized ...