On Thu, Jun 9, 2011 at 7:18 PM, V G wrote: > Hey all, > > Here's my very simple guitar tuner board. > > Schematic: http://postimage.org/image/yqrtiyh0/ > Unrouted PCB: http://postimage.org/image/yqth2ays/ > Routed PCB: http://postimage.org/image/yqq5zlz8/ I just had a quick look, but here are a couple of thoughts. First off, I'd swap the position of the crystal and its caps. I've always been taught that the shorter you keep the oscillator traces, the better. Plus it might give you more "finger room" around those switches, depending on the height of the crystal. Second, the way you've chosen to connect and then place the LEDs and their resistors has resulted in a lot of extra business on that side of the board. I know it probably doesn't make much difference as you use the autorouter, but if you either connected the resistor to the port pin, then to the LED _OR_ swapped the physical location of each resistor and LED, you might end up with a cleaner PCB. After I route a PCB (which is almost always manually) I then go back and see how much I grow the trace sizes. For the speeds I'm running things at, there's no need for .01" traces when there's enough room for 0.024. This usually involves moving vias, etc. Josh --=20 A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. =A0 =A0 =A0 =A0 -Douglas Adams --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .