Day 2 of using the standard IR Probe... February 19, 2014 09:09AM |
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Re: Day 2 of using the standard IR Probe... February 19, 2014 09:15AM |
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Re: Day 2 of using the standard IR Probe... February 19, 2014 09:54AM |
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Re: Day 2 of using the standard IR Probe... February 19, 2014 11:14AM |
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Re: Day 2 of using the standard IR Probe... February 19, 2014 12:07PM |
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Re: Day 2 of using the standard IR Probe... February 19, 2014 11:55PM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 03:09AM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 05:37AM |
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dc42
I think the reason Kim is calibrating at 0.1mm and P230 is because he is not using Kapton tape or white tapes. So he is either detecting the refection from the aluminium heat spreader under the glass, or getting IR scattering from within the glass, or a weak reflection from the surface of the glass. It would be interesting to know whether putting black paper under the glass makes a difference to the sensor reading.
Re: Day 2 of using the standard IR Probe... February 20, 2014 06:42AM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 07:44AM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 09:15AM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 09:20AM |
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I did this some time ago with some (ancient) black "flock paper #55" bits that I had laying around from an old optics project. It is dark black and felt like to absorb light.Quote
Radian
Hi Kim, Interesting that you set the Z probe reference point to just 0.1mm above the bed... is this to reduce the ambient coming in from the sides? I suppose if the probe can be used to shadow itself it could help. If that's the case would it help to form a jacket around it?
Re: Day 2 of using the standard IR Probe... February 20, 2014 11:40AM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 03:46PM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 04:43PM |
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Radian
@Treth - I understand what you mean about waiting before publishing. If you do get round to it though, I hope you put some photos in your topic.
Re: Day 2 of using the standard IR Probe... February 20, 2014 05:36PM |
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aesuli
An hypothesis that I made a couple of weeks ago but I haven't tested yet (I preferred the quick temporary solution of the microswitch) is that dark patch as the reflector for the IR probe would work better than a light colored one.
The rationale behind this idea is that a white/mirror/light patch reflects much more IR (here I'm simplifying by assuming that IR reflection is similar to the visible light reflection) also from distant sources (thus including light coming from lamps, windows etc) while a dark one (dark also with respect to the IR spectrum) "saturates" and reflects IR only when the IR source is very close and relatively intense.
Re: Day 2 of using the standard IR Probe... February 20, 2014 05:54PM |
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Re: Day 2 of using the standard IR Probe... February 20, 2014 07:09PM |
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