In SX Microcontrollers, SX/B Compiler and SX-Key Tool, darco wrote:

I started messing around with microcontrollers a few months ago, and after much tinkering I've finally finished my first PCB. I've already sent it off to get fabbed, but I was hoping to get some feedback here that I can perhaps apply to my future boards. 

This board will be a part of an Ambient RGB LED Lamp, and uses an SX28-DIP. The LED's will be mounted on the outer corners, pointing slightly toward the center. Each corner can be a different color, with the intention of being able to control the color of different sides of the lamp independently. Here is a mockup:

[url=http://www.deepdarc.com/module/album/getpic/?pid=986][img]http://www.deepdarc.com/module/album/getpic/pic-986-medium.png[/img][/url]

I had to use two darlington arrays because the LED's would be pulling too much current when all lit. I added two extra connectors (EX1 & EX2) for the unused circuits on the darlington arrays to facilitate future tinkering.

With the pic below, I've superimposed the bottom copper layer, so that you can follow the traces. (Note that the caps and one connector are missing from the image below. Ignore that part)

[url=http://www.deepdarc.com/module/album/getpic/?pid=987][img]http://www.deepdarc.com/module/album/getpic/pic-987-medium.png[/img][/url]

As you can see, the bottom layer is mostly ground plane.

Here is the schematic:

[url=http://www.deepdarc.com/module/album/getpic/?pid=988][img]http://www.deepdarc.com/module/album/getpic/pic-988-medium.png[/img][/url]

Any thoughts?

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