If anyone wants to pursue this:
http://www.photonicsonline.com/artic...S-756-PCB-0001
May be cheaper than a spectrometer, and it's only the center wavelength you're after right?
Senior Member
If anyone wants to pursue this:
http://www.photonicsonline.com/artic...S-756-PCB-0001
May be cheaper than a spectrometer, and it's only the center wavelength you're after right?
Senior Member
Great find. I'll get in touch with them now.Originally Posted by FourDee
- There is no such word as "can't" -
- 60% of the time it works every time -
Senior Member
post the price dan
Eat Sleep Lase Repeat
Senior Member
Yeah Dan, post the price man, we wanna cancan man.
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.
Senior Member
groupbuy, groupbuy
Junior Member
++ 1groupbuy, groupbuy
Senior Member
Nothing back from them yet; but found this:
$50 sensor, $500 for the PCB+sensor (contains temp. stuff as well)
http://www.sas.org/E-Bulletin/2001-1.../labNotes.html
(That article is nearly 10 years old mind...)
Will keep you posted.
I'd jump at the opportunity of binning these diodes off on wavelength... just need the sensor
- There is no such word as "can't" -
- 60% of the time it works every time -
Senior Member
Ok, EUR 500 for a single piece, EUR 460 each for 10.
4-6 week lead time.
Hmm...
- There is no such word as "can't" -
- 60% of the time it works every time -
Senior Member
pff not mega cheap then
Eat Sleep Lase Repeat
Senior Member
A cadmium-sulfide photocell peaks at around 515nm, similar to the human eye. A circuit could possibly be built to detect the photocell's resistance (using wheatstone bridge - thx Steve) to measure the slight difference between 445 and 460 nm. The CdS cell costs about $2. It might not be accurate enough tho. I dunno. It'd take some research. The ambient temperature and humidity would have to be controlled. Probably in an environmental chamber. too much to think about tonite. n/m. nitey-nite.. zzz .
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