Interfacing a Bare PIR Sensor with Arduino – Can It Be Done. Posted: June 23, 2025 | Last updated: June 23, 2025. Hi, I'm Bill. I'm a software developer with a passion for making and electronics.

Working from home with regular video meetings has its challenges, especially if you add kids to the mix. To help avoid embarrassing situations, [Charitha Jayaweera] created Present!, a USB device t… ...

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: Continuously reads ...