19 Jan
2011
19 Jan
'11
11:58 a.m.
Re: viewing IR beams.
You may be able to borrow an IR sensor card from a friend who works
with IR laser equipment. Alternatively, a sensor card can be had for
not a lot of money:
http://www.mcmelectronics.com/product/DISTRIBUTED-BY-MCM-72-6772-/72-
6772
No electronics involved at all.
FWIW,
Chuck