The water detection application measures the presence of water, using a soundcard. Please use a simple cable with two elektrodes, and the microphone input of your soundcard. A water detector is a small electronic device that is designed to detect the presence of water and alert humans in time to...

We have seen lots of automated sentry guns over the past year but this Autonomous Paintball Sentry Gun by Zero Op is the first I have seen for sale. For about $3000 you could buy the system and have enough left over to buy some paintballs. If you need to guard a large open area this may be just the...

The RangeVideo on-screen display (abbreviated OSD) is a small device which overlays GPS telemetry and and other relevant data onto a live video.This device is a must have for FPV flying! The RVOSD is a must have device for FPV. Firstly, the RVOSD is like the "motherboard" of your new FPV kit. All...

Book automated systems have a similar look but this Automated Book Scanning Robot called ScanBot seems like the scanning system it uses may be one of the best. It appears to use a vacuum to hold the page firmly against the moving scanning head. I wonder if it ever flips two pages at once? The book...

This article will show you how you can convert your webcam into a modern rangefinder without any hardware. The math is very simple, so this new technique works very well for vision applications that need to run quickly.   Here’s a great free application that will turn your web cam into a...