Similar to another suggestion, you might take a look at http://thereminvision.com/, and then
follow the link to the 2nd version. I've not actually used one of these
sensors, although I'm familiar with the musical instrument.
Daniel
-----Original Message-----
From: rajesh parwani [mailto:rajesh_almighty@yahoo.co.in]
Sent: Wednesday, December 22, 2004 4:58 AM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] sensors...hi friends,im searching for the sensors which can detect barrier at a distance of upto 3 cm and not more . well my working condition have lot of ambient light . i would prefer to fix the setting once for any lighting so that need not change it from place to place. please suggest me some way . should i go for ultrasonic sensor or the normal opto. if possible send me some circuitregards,rajeshYahoo! India Matrimony: Find your life partner online.