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J2
11-15-2008, 06:50 PM
How will I make an IR sensor to detect a closed door or open door? I will need a circuit with affordable and easily available circuit elements. Out object will be at a range of .5m. Please help.

Creamlayer
11-20-2008, 05:29 PM
There is a great IR sensor circuit at robocet.com Check it out
http://www.robocet.com/forum/viewthread.php?forum_id=30&thread_id=50 It uses a tone decoder ic. So it has ambient light rejection built into it. Circuit is also available
good luck mate

gautam19etc
12-10-2008, 05:14 AM
hey
you go for the TSOP1738 IR sensors. It will work very well.

all the best!!

the event of robotics that signifies the importance of sensors.
for more detail visit: http://www.kritansh.in/