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LED D20 pedestal Rate Topic: -----

#1 User is offline   aotsukisho 

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Posted 09 August 2013 - 05:01 PM

I came up with this idea a few months ago shortly after buying a translucent spindown D20, but I only got around to finishing it last night. The gist of the project is that it's a pedestal for the D20 that only lights up when the die is placed on it. The easiest way is to use a weight-activated microswitch that closes when the die is in place.

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The donor of the box is an old GWS FM receiver shell that I got a few years ago. You can see the microswitch I plan on using right next to it.

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I tested the design with one microswitch and found that the entire project was going to be too heavy for a single switch to reliably disengage when the die was taken off. I used a mirrored pair of two and the weight response is perfect.

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The battery for the project is an old lipo that I bought for the 6s AE RC182 project that I finished/sold a few years back. 2s, 800mAh is perfect for something that's not gonna be drawing much current (~25mA).

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hotglued the LED to the bottom of the case. The LED has heatshrink around it so that light doesn't just leak everywhere

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everything wired up. I could've gone series or parallel with the two switches, I decided on series since it cuts down on the number of wires I need.

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plugged in and ready to go

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place it upside down on the table...

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and if force is applied to the top, the LED lights

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next to the D20

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and this is what the D20 looks like when it's placed on the pedestal

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normal, not lit

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LED active

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low ambient lighting shot. It's really pretty. I suspect that as this die gets older and more scuffed up, the light will diffuse better too.


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