All you’ll need is an Arduino Yún, PIR sensor, a USB camera, speakers, and a USB sound card. It’s a bit on the expensive side, but it’s infinitely reusable and easy to move from place to place.

He suspected EMF interference so as a quick first step he decided to throw together an EMF detector using an Arduino. It uses a bank of LEDs as an indicator bar to reflect the EMF picked up by the ...

If so, Make Projects user Clement Storck built a simple Arduino powered notification system that sends him a text message and an email with a photo every time someone rings the doorbell.

Technique / 'How often does an arduino board need to be replaced if used as a sensor in a waer tank' Techniques From lens focal lengths and fill-flash to portraits, macro or stunning landscapes ...