TreadBot

[skimask]

well here it is... hopefully it works this time.. i have changed a lot around since the last time i posted it...thanks fof the help guys, and i will keep everyone updated on how it goes...

Nice looking board...a couple notes...
--Add in vias on any signal/power line you can fit them on, whether you drill them out or not. That way you can drill the via later and plug in extra wiring or make mod's down the road, goes back to cutting traces and making fixes and stuff like that.
--I might get rid of that big ol' ground plane square on the bottom, unless you plan on coating the board with something (a rattle can of acrylic is a good thing I've found out recently and it scrapes off easily with rubbing alcohol and a cotton swab after it's dried). That plane to me looks like a perfect spot to short something out!
--Very few 90 degree corners, very few corners greater than 45 degrees, decent ground run, I might add a few extra power runs on the bottom (and/or thicken up the power traces you've already got) to help the power get around a bit better. The setup you've got is almost a daisy-chain. Optimally, you'd almost want all the power traces to come back to a central point (same for ground, but you're good there).

[mister_e]

a very little suggestion. Usually the power rails should be 2-3 X bigger than the signal one.

unless, it looks good, nice job. Don't give up

[dragons_fire]

--Add in vias on any signal/power line you can fit them on, whether you drill them out or not. That way you can drill the via later and plug in extra wiring or make mod's down the road, goes back to cutting traces and making fixes and stuff like that.

-- The setup you've got is almost a daisy-chain. Optimally, you'd almost want all the power traces to come back to a central point (same for ground, but you're good there).

think you told me all that before, and i just forgot..

i actually have been using "tremclad" clear on the boards after their etched. then i can drill through it, and it works like a solder mask. it seems to take a little more heat, but im mostly soldering headers and sockets, so it shouldnt make too much of a difference..

the ground plane on the top of the board, is right under the SD card reader. so i put it there to kinda block it from anything..

[skimask]

i actually have been using "tremclad" clear on the boards after their etched. then i can drill through it, and it works like a solder mask. it seems to take a little more heat, but im mostly soldering headers and sockets, so it shouldnt make too much of a difference..

the ground plane on the top of the board, is right under the SD card reader. so i put it there to kinda block it from anything..

Good call on both points...

[mackrackit]

Like Mr_E said about the power traces.

NICE JOB!

[Darrel Taylor]

Just concentrating on the Power&Ground right now.

<img src=http://www.picbasic.co.uk/forum/attachment.php?attachmentid=1578&stc=1&d=117761534 8>

[mister_e]

mmm nice catch!

[Darrel Taylor]

I think the PING's backwards too.

<img src=http://www.picbasic.co.uk/forum/attachment.php?attachmentid=1579&stc=1&d=117761982 8>
<br>

[dragons_fire]

i have never had this many problems with my boards... i have fixed everything that was mentioned... i took out that cap, increased the sizes of power and ground traces (and made them go all around the board), and i flipped the "ping" around too..

i dont know how i got that one backwards, it was fine all the other times i designed this...

thanks guys....