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Posted by Dan (206.170.7.247) on December 21, 2001 at 13:07:39:
I want to mount an IR detector on a model train so I can trigger an on-board whistle from a hand-held remote control.
I bought and built an IR detector kit that uses a simple T 1-3/4 LED-type detector hooked up to an LED indicator light that goes on when an IR
transmission is received. For test purposes, I'm using a TV remote control as the emitter. It works, but only when the remote is pointed directly
at the top of the detector and is less than 6 feet away. I know the emitter is strong enough since my TV responds from 20 feet away at almost
any angle.
How can I extend the range and widen the receiving angle? I'd like to be able to trigger it from up to 12 feet away, from any angle (line-of-sight).