Please test clear ABS and infrared

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Kobus du Toit

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Mar 8, 2013, 7:56:20 AM3/8/13
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Is there anybody that can please place a clear ABS printed item infront of a TV IR receiver and see if the IR of the remote can go through?

I need to decide on how I will create the IR casings for my phasers

Martin Read

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Mar 8, 2013, 8:37:07 AM3/8/13
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I don't know about ABS, but I`ve just tried it with transparent PLA, and the remotes do work.



Jetguy

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Mar 8, 2013, 9:36:06 AM3/8/13
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Further, let's go back to the old IR endstops of the Cupcake days. You
cannot use natural ABS to block it either as the IR shined right
through.

And, if you ever have a doubt, most every video camera on the planet
lacks the IR filter and can see it. Hold a remote up to a video camera
and look in the viewfinder or LCD and you will see it for yourself.
Hands down, the easiest way to troubleshoot IR systems.

Joe Larson (aka Cymon)

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Mar 8, 2013, 12:39:39 PM3/8/13
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I suppose it's a question of how much shines through, and what thickness effects things.

I don't have any clear ABS. I want to get some but I hear it's a pain to work with.

66tbird

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Mar 8, 2013, 12:49:41 PM3/8/13
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I've got some clear ABS from Afina and it's a dream work with. I'm 235C at 70mm for quality.  I was pleasantly surprised. It's got a more slippery feel kind of nylon-ish.

BTHOON

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Mar 8, 2013, 12:50:32 PM3/8/13
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Yes and no.  
You can put a receiver in there and it will receive IR.
You can put a transmitter / diode in there and the light WILL shine through.  The thing is that while a perfectly flat piece of glass or plastic will allow the focused beam created by the diode's lens to pass through without significantly changing it's shape, the layers of ABS will subtly bend the light and rather significantly reduce effective range.   

If I were you, I'd find a friend with a laser cutter and have some clear acrylic cut to the size  and shape you need.  Even getting it cut for you online will be cheap.   Heck, I can do small runs for very low costs myself.   It will pretty significantly increase your range to keep the piece in front of the diode as clear and flat as possible.

Joseph Chiu

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Mar 8, 2013, 1:04:25 PM3/8/13
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I am with Jetguy... You want the clearest apertue.  Go with a cut sheet of glass or plastic, not printed.

And, for the receiver section, make sure there is an IR pass filter suitable for your wavelength.  Otherwise, other light will affect the sensitivity of your receiver, making it less reliable.  (Of course, if your receiver module already has the necessary filter, you won't have to add that.)

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Joseph Chiu

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Mar 8, 2013, 1:05:12 PM3/8/13
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Oops, it was BTHOON. Sorry.

On Mar 8, 2013 9:50 AM, "BTHOON" <amo...@gmail.com> wrote:
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