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 ...

The code is an Arduino project for the Digispark Attiny85 to turn on a light source when the PIR sensor detects something ... Because an on-board “user” LED is wired to P1 of Digispark by default, you ...

Get close enough to this raven and you’ll set off the PIR sensor, which triggers ... 12-volt power LED. This bird’s brain is an Arduino Nano, which is protected from the 12V supply with ...

In the microcontroller era today, Arduino ... at its sensor input port. As indicated, our system requires a “Logic High (H)” level input to wake up. The best sensor you can use to detect an intrusion ...

Present consists of just a PIR sensor and Arduino in a 3D printed enclosure to snap onto your monitor. When the PIR sensor no longer detects someone in range, it sends a notification over serial ...