While I don't disagree with you, one should qualify what is a "high speed"
application. For a PIC the crystal (or resonator, or RC osc, or whatever) is
operating at 20MHz MAX, but any of the I/O lines will be *much* slower than
that. In such case, I doubt the angle of the trace would matter much.

I'd be much more concerned with the long, skinny, meandering ground trace,
lack of suitable bypass near the PIC, all the analog inputs shorted to Vdd,
large reservoir cap on the regulator output without a protection diode and
the dangerous battery connection. But maybe that's just me :-)

-Denny




> There are a few traces you need to fix.
> 90 degree traces are not good for high speed applications
> make your traces to 45 degree angles
>
> -------------------- \      45
>                       \_________________
>
>
>
> ---------------------|     90
>                      |__________________
>
>
> Andre Abelian
>
>
>
>
>
>
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
> Of Alison Lewis
> Sent: Monday, May 09, 2005 7:38 AM
> To: piclist@mit.edu
> Subject: [PIC]: ------- PCB 5 Analog Inputs -------
>
> "I have a basic PCB layout, 5 (Analog) inputs/5
> (digital)outputs. I wanted to post it to the board and
> see if it looks right."
>
> If its right, I can  place the whole PCB and
> corresponding information out there for other people
> to make boards.
>
> HERE IS THE PCB Screen Shot:
> http://beard.dialnsa.edu/~lewisa/blogs/DMSpring2005/Pic_5-5_PCB.gif
>
>
>
>
>
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