Initialization: Sets up pin modes for the LED, PIR sensor, and piezo buzzer. Begins serial communication with a baud rate of 9600. Delays for 5 seconds to ensure stable start-up. Motion Detection: ...

Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

Utilizando um Arduino, três LEDs, um buzzer e um sensor PIR (Passive Infrared), criamos um sistema de alarme simples que detecta movimentações no perímetro da loja. Quando o sensor PIR detecta ...

In an era where homeowners frequently leave for work or education, robust security for residences is imperative. Traditional security measures, including window and door locks, present challenges such ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...