HOW TO: Make a Very Simple Proximity Detector

instructables.com — Gadget freaks, model railroaders, roboticists or cat-hosts will love the versatility of the Sharp IS471 infrared proximity detector. It is the size of a transistor, operates over the 4-16 volt range, and can detect objects about 4-9 inches away by reflected IR pulses. COTS toilet auto-flush application instructions included... Jul 16, 2006 View in Crawl 4