Sensor used is a digital PIR sensor module; This is a basic circuit. It is possible to control Hi-Power sirens (pin D6), and flashers (pin D5) using suitable transistor/mosfet drivers; If you wish to ...

It should be a piece of cake if you program your Attiny85 chip (not Digispark) using your existing Arduino IDE with the help of one “USB tiny ISP (v2.0)” programmer. The software/Arduino sketch /* * ...

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 ...

Present consists of just a PIR sensor and Arduino in a 3D printed enclosure to snap onto your monitor. ... the circuit is powered on and stays vigilant for any movement inside the jar.

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… ...