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picmicrodevelopersforum · PIC Micro Developers' Forum - Microchip PIC Microcontrollers Discussion Forum

Group Information

  • Members: 1334
  • Category: Microcontrollers
  • Founded: Mar 9, 1999
  • Language: English
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Description

This discussion group (club) is a forum for designers and developers to talk about the Microchip PIC single-chip microcontrollers.

Note: This group has been flooded with off-topic postings. Members who post these off-topic messages will be removed and banned from the membership list.

Most Recent Messages

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Re: Making your own UV (Ultra Violet) meter
I'll have to give it a try.
Posted - Thu Jan 5, 2012 4:17 pm
S
level9z
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Re: Making your own UV (Ultra Violet) meter
I used to cut the tops of of 2N2222's (metal can), they make great photo sensors. Get some UV lens material and you can use any sensor, there are a lot of
Posted - Tue Jan 3, 2012 10:16 pm
Orwill Hawkins
ovwh
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Re: Making your own UV (Ultra Violet) meter
Well the idea (Or thought it might work) was the same as an IR photo diode. I've used them for other sensors before. Just wanted to know if anyone tried it
Posted - Tue Jan 3, 2012 3:56 pm
S
level9z
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Re: Making your own UV (Ultra Violet) meter
All LEDs work in 'reverse' to some degree. As long as you load them with high impedance and of course don't expect more that their normal forward voltage out,
Posted - Mon Jan 2, 2012 9:17 pm
Brian
batctrashcan
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Re: Making your own UV (Ultra Violet) meter
... Um.... I'm not sure how a light EMITTING diode would work as a sensor. You can buy UV PHOTODIODES, but they're mucho expensive (~$100 each). -- Mike Mike
Posted - Mon Jan 2, 2012 1:27 am
Mike Dodd
doddm2001
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2012 6
2011 1 14 2 11 2
2010 3 1 4 1 3 2
2009 13 3 1 17 17 4 5 7 4 2 12 12
2008 1 14 3 1 1 17 10 5 5 1 7 4
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2005 27 17 11 11 36 23 30 2 5 23 1 31
2004 49 21 29 22 24 28 25 30 17 30 19 24
2003 77 78 23 37 26 37 50 54 45 103 93 37
2002 3 1 2 4 9 13 3 29 19 26 22 21
2001 5 9 7 3 1 3 6 18 13 3 14 2
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1999 5 2 2 2 4 9 3 2 3
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