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 ...

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 /* * ...

The circuit for the Parallax sensor looks like this: Connections are as follows. ... } } Here is the circuit for the Sparkfun Active Low style sensor. PIR Pin “+” connects to Arduino +5.

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.

A year ago [Lochie] bought an Airwick automatic air freshener, and while he thought it was a cool gadget, the freshening spray and the novelty ran out in short order. The device collected dust in h… ...