the treadbot board was homemade... this ones not... i can get these made at Alberta Printed Circuits for less than it costs me to make them.. and these ones have thru-plating and better traces..
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the treadbot board was homemade... this ones not... i can get these made at Alberta Printed Circuits for less than it costs me to make them.. and these ones have thru-plating and better traces..
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I lost again...Originally Posted by dragons_fire
I forget...aren't you 'just up the street' from me? Calgary or something?
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Me too.
<br>
DT
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yeah... . i just dont know about this board...
im in Calgary, and its -42C with the windchill and im workin outside...
Alberta Printed Circuits has a prototyping service that is two boards, double sided with thru-plating... these two boards (the top and bottom were joined together and then i cut it after) were about 3.2" X 2.5", and cost around $36 total... so each board was $13 and there made next day.... its almost not worth it for me to make them....
so i have another board the same as this one, so i might pick up another PIC and try it all again just in case i shorted something or the PIC is bad...
I have no affiliation with apcircuits, but they do good work and they have helped me through design problems so if youre looking for somewhere to make some boards, take a look at them...
eagle cad takes the schematic (which is easy to make and troubleshoot) and makes it into a board, then i email that to apc and then solder it together... there isnt a lot i can do wrong if the design is right, and the soldering is right...
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Desoldering a TQFP without a desoldering tool...heat the pins up, bend them up with something. If it's not the chip, you can probably resurrect the chip by laying it flat on a suitable spacer and flattening the pins back down with a toothpick...works for me anyways.
Yep, in Minot. You guys sent us this Alberta Clipper! And it rocks!!! Radio is saying -15F with -52F windchill (whipping up out there about 25-45MPH).im in Calgary, and its -42C with the windchill and im workin outside...
Personally, I use www.pcbexpress.com, but that's only because I've got an older version of Protel 2.7.5 and they support it. If I only had Gerber files to work with, I'd probably go with APCircuits.Alberta Printed Circuits has a prototyping service that is two boards....
Get one with an internal OSC option, like the 18F6723 or something...unless you need the CAN option. Incidentally, it's really easy to overlay an 80pin TQFP over the top of a 64pin TQFP and give you both options. When I made those 80pin TQFP -> dual 40 pin/IDC adapters awhile back, I did exactly that...made the center of the PCB able to take either an 18F6720 (64 pin) or an 18F8720 (80 pin)...same layout, just added 2 pins at each end on each side, spacing still the same, etc.etc.etc.so i might pick up another PIC and try it all again just in case i shorted something or the PIC is bad...
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the only reason i went with this PIC, is cause of microchips little PIC selector charts. it had the right number of I/Os, and a lot of memory... i think the next time, i will go with an 80-tqfp and something that will support external program memory.. then i should be able to start with the basic flashing led on internal memory, and slowly move up to more advanced...
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Well I've only got one more possibility.
<img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=2314&stc=1&d=120163702 7" />
Some of the via's under the PIC are Really close to the pins.
And there's no way to tell from the picture.
It would take an ohm meter to know if they're shorted or not.
But, since you're going to try the second PCB ...
If you send me the first one, I WILL find why it's not working.
<br>
DT
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