|
Hey Dragon,
It appears that all the VDD and VSS on your PCB are backwards.
Here's a 68-PLCC socket and 18F6585 pinout
<table><tr><td valign=bottom></td><td valign=top>
</td></tr></table>
and here's your PCB
I haven't checked the rest of the pins.
HTH,
Added: Oops, and PIN 49 is VDD
AddedMore: No doubt the original chip is Fried.
<br>
Last edited by Darrel Taylor; - 23rd April 2007 at 02:08. Reason: Pin 49, Fried (not baked)
DT
|
that confirm my thoughts 72-73 post ago
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
|
thank you so much!!! i have been over this board so many times, with the datasheet in one hand, and the schematic in the other..
i new it had to be something stupid like that, i just couldnt find it..
i definately feel like a retard now!!! 2 different boards (designed from the beginning both times) and a weeks worth of going over and measuring..
thanks again!!!
|
**** happen my friend. I guess you will'nt do it again
Last edited by mister_e; - 23rd April 2007 at 02:36.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
|
Never done THAT before.... Yes I have.
(that's how I knew to look for it)
<br>
DT
|
it is actually my first time doing that... but im sure it wont be the last..
at least i enjoy making the boards, i think its part of the fun. i also only soldered on the basics, so its not much of a loss of money...
i cant believe i didnt notice it.. i started from scratch on the second board, and i still didnt get it right...
thanks again!!
|
Good..you found the problem!Originally Posted by dragons_fire
You would think it wouldn't be that hard to cut some traces and run a few jumpers to fix the board. It's not optimal, but it should work.
|
it may not be too hard to cut some traces and run a couple jumpers.. i like having everything nice and clean.. and like i said, i enjoy making the boards... later on, i will try to post a pic of my 16f88 controlled lightning trigger for my camera. seems to work using a camera flash, hopefully it will work with lightning....
i used a photocell (resistor) connected to an ADC pic on the PIC, and it takes 2 samples, and compares them. if the second one has a greater value, then it triggers the camera. if i use a flash (disposable camera parts) it will take a picture and capture the flash, so it should be fast enough for lightning...
Members who have read this thread : 0You do not have permission to view the list of names.
Posting Permissions
Bookmarks