Back projection 56 inch multitouch television.

Step 4 Ir section

Ir leds
In this setup I put one led every inch on four side of the acrylic. 36x2+48x2= 168 led. Big quantity of leds helps to have really bright blobs. For my experience 1 led every inch is enough to get nice result. I got the best performance by drilling 5mm holes on side of the acrylic and then glued them with testors glue. Then I wired the leds and paint the acrylic edges using really dark black paint. I don't use any frame on side of acrylic, black paint block all IR and it's a lot simpler to avoid leaking of IR.

Comments

[junior2387]

ok i have a couple questions. 1. u applied the glue first into the wholes, then you slid the LEDs in? and second if i were to use the paint, any paint in black would work? and do i want the paint to NOT touch the LEDs legs, or is doesnt matter that much? or would u thing it is better to paint the edges and then make the wholes? let me know please. thank you.

[Hoaxe]

paint is not conductive so it would not matter. i hope this answers your concerne

[junior2387]

it does thank you

[junior2387]

does it matter of the paint touches the LEDs