Cool
I did look at these but didn't want to drop £30+ to experiment. 4mm Chinese led strip with wifi/Alexa etc should work well
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I did look at these but didn't want to drop £30+ to experiment. 4mm Chinese led strip with wifi/Alexa etc should work well
Wookii
Member
Cool
Yeah, I'm searching for an RGB kit, as being able to control the colours would allow further experimentation. For example, I'm wondering whether having two separate LED strips top and bottom, would allow adjustable colour transitions without needing the pre-printed films.
yeah it could do, you could have different colour on bottom led and top led, but this would also need 2 controllers. Fortunately the rgb led kits are only about £15 and work well
noodlesuk
Member
In a clear sheet, the light is distributed, but only visible at the edges, or on the face if etched, to cause refraction. I suspect the ADA screen uses a diffuser and/or reflector similar to that in an LCD TFT to get the backlighting effect from and edge source, reflecting light towards the viewpoint. Some info here
https://pid.samsungdisplay.com/en/learning-center/blog/lcd-structure
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rebel
Member
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Yes. You can see this effect when you try and backlight a tank also.
mrhoyo
Member
I'm fairly certain it's basically just LED light sheet. It's used a lot in shops (remember being allowed to go to those?) and is basically acrylic with a fine grid routed in and led down one edge.
https://www.addlux.com/solutions/led-light-sheet/
https://www.addlux.com/solutions/led-light-sheet/
rebel
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IT's better if it's a luminium or similar as silicone wouldn't help with heat dissipation from the LED, which could reduce it's life.
Wookii
Member
Very true on a clear sheet, but when the sheet is opaque I suspect the whole sheet will illuminate,
My sheets arrive tomorrow, so I’ll test it and post up the results.
Wookii
Member
Could be, but I think you’d sheet the grid structure in Andrew’s under-exposed images above if that were the case.
As I say though, I get the opaque acrylic sheets tomorrow, so I can test then.
rebel
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I think sticking a semiopaque white sheet on clear acrylic will also work.
Wookii
Member
Looks like you guys were right, I was wrong on this - it hasn’t worked:
Only the first inch or so illuminates.
If I shine the light behind the panel, it all illuminates, but not strongly enough to work on the back of a fully lit tank:
So back to the drawing board. I may try and source some of the light sheet @mrhoyo suggests above.
I also have some clear acrylic in the garage so I’ll try that with the face sanded also.
Only the first inch or so illuminates.
If I shine the light behind the panel, it all illuminates, but not strongly enough to work on the back of a fully lit tank:
So back to the drawing board. I may try and source some of the light sheet @mrhoyo suggests above.
I also have some clear acrylic in the garage so I’ll try that with the face sanded also.
RudeDogg1
Member
It should work I had a topper for one of my old pinball machines. And that had a laser etched design in the middle and just a strip of leds along the bottom. The edges and design lit up. I also made a mod for the same machine using acrylic that I had sanded one side with fine paper to give it a frosted look and the whole piece would glow
Wookii
Member
Maybe my LED strip isn’t bright enough then - it is about 6 years old.
RudeDogg1
Member
Maybe, could even be you need bigger leds
