Comments on: How to assemble your own 140 LED Infrared Light Source (part 2) http://www.haydnallbutt.com.au/2009/02/18/how-to-assemble-your-own-140-led-infrared-light-source-part-2/ The World through the eyes of a scientist Sun, 16 May 2010 08:21:11 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: FastLife http://www.haydnallbutt.com.au/2009/02/18/how-to-assemble-your-own-140-led-infrared-light-source-part-2/comment-page-1/#comment-1234 FastLife Wed, 23 Sep 2009 00:44:50 +0000 http://www.haydnallbutt.com.au/2009/02/18/how-to-assemble-your-own-140-led-infrared-light-source-part-2/#comment-1234 Hmm...I am not sure to be honest. Futurelec certainly have the 880nm IR LEDs. I had done a test previously using the completely invisible 920nm and 850nm and found the 850nm to be much brighter to the ccd chip of the camera. I suspect I simply stuck with the 850nm LEDs since I had tested this wavelength and found it to be the brightest of the two on the ccd chip. Without the technical specifications or having tried it I don't know whether the 880nm would have been just as good. It could well have been. Hmm…I am not sure to be honest. Futurelec certainly have the 880nm IR LEDs. I had done a test previously using the completely invisible 920nm and 850nm and found the 850nm to be much brighter to the ccd chip of the camera. I suspect I simply stuck with the 850nm LEDs since I had tested this wavelength and found it to be the brightest of the two on the ccd chip. Without the technical specifications or having tried it I don’t know whether the 880nm would have been just as good. It could well have been.

]]> By: Max http://www.haydnallbutt.com.au/2009/02/18/how-to-assemble-your-own-140-led-infrared-light-source-part-2/comment-page-1/#comment-846 Max Wed, 26 Aug 2009 02:04:14 +0000 http://www.haydnallbutt.com.au/2009/02/18/how-to-assemble-your-own-140-led-infrared-light-source-part-2/#comment-846 Great tutorial, very detailed. Just one question - why did you use the 850nm LED's instead of the 880's - "880nm IR LEDs (these are the LEDs that came with the kit which I replaced with 850nm LEDs since I wanted 140 of them and the kit only came with 35 LEDs)." Why not buy 105 @ 880nm? Great tutorial, very detailed.

Just one question – why did you use the 850nm LED’s instead of the 880’s – “880nm IR LEDs (these are the LEDs that came with the kit which I replaced with 850nm LEDs since I wanted 140 of them and the kit only came with 35 LEDs).” Why not buy 105 @ 880nm?

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