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LED Bed Design Improvments

Posted Oct 6 2005 - 2:17pm by robogeek
Filed under electronics | LED | PCB | Schematics

Well I was going around hack-a-day today and saw the "led pimp bed" article. Well I decided to take the challenge of designing the adaptive color controller. But first I wanted to make a few design improvements to the LED module itself

First, I drew out the schematic.
LED Bed PCB Schematic

Then I layed out a 2 layer board.
LED Bed PCB Layout

Then I quoted the board at http://www.expresspcb.com
and here is the pricing I got:
Qty 25 x $15.37 = $384.25
Qty 50 x $7.86 = $393
Qty 100 x $4.11 = $411
Qty 250 x $1.86 = $465
Qty 500 x $1.11 = $555

Now I will not be purchasing any but for those who want to build kits I think your best bet is the 500.

I will continue this post later. I have to run now though.

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Responding to your comments

For reference:
Thanks for the props Jason.

I bet its that expensive! A: +
OVERKILL: +
uhh, 2 sided pcb why?:
*A couple things on this 2 sided PCB thing, one is I work for a Defense contractor and am used to building rugged High quality boards(as expensive as they may be... its why the toilet seat costs $5,000 and the hammer is $2,000). Also I design High Speed digital processing boards that rarely go below 10 layers so 2 is like nothing for me. also those 10 layer boards cost about $250 each in small quantities.
*Ok, that said if you go for at least the 2 layer board you get Plated Thru-holes this provides for a stronger solder joint and less likely hood that you will pull the pad off when soldering or during a pillow fight in your dorm room.
*Also, lets say you want to make a bunch of these and some of the controller boards the design that I am working on now.it will be a 2 layer board as well. You could order a prototype panel with a couple controller boards and a bunch of the led boards on it.
*Ah yes, and protoboards they are good for testing designs but if i am going to be displaying something or making alot of them then no I will not use a proto board. also most of my stuff is surface mount so i don't really think of them as viable alternatives.
*Needless to say no board I will design will be on a single layer, therefore its a moot point for me.

you need to consider:
Thanks for the tip, for 2 layer boards they look really good on the price - it would be 5 rows of 22 boards on a single panel for 110 for $89.

LED Placement:
Yes I considered those types of placments to be better I just wanted to stay within the brackets on the original design.

Robogeek

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-Black Holes are where God devided by zero.
-Alcohol and Calculus don't mix, never Drink and Derive!
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By robogeek at October 10, 2005 - 11:16am | parent | login or register to post comments | email this page