Solarwind,

Since this is a new unproven board, it could be a short on the PCB.  Did the 
mfg of the board do a flying lead test
before shipping it to you?  If you have another blank board, check it for 
shorts usning an ohmmeter or continuity
tester.  You might find that there are tiny whiskers between some of the 
traces.  Especially if it is a fine pitch board.

Jim

----- Original Message ----- 
From: "solarwind" <x.solarwind.x@gmail.com>
To: "PICLIST" <piclist@mit.edu>
Sent: Wednesday, August 12, 2009 1:20 AM
Subject: [PIC] My simple dev board is not working


>I finished constructing my very simple PCB and PICKIT 2 is not working
> with it. When I plug it in, PICKIT2 says:
>
> PICKIT2 VPP voltage level error.
> Check  target & retry operation.
>
> So I rebuilt the exact circuit on a breadboard and it worked.
>
> Here is the schematic: http://img18.imageshack.us/img18/617/schematic.png
>
> Here is the board: http://img35.imageshack.us/img35/6794/boardq.png
>
> The only variations I did were that I changed the value of the
> polarized capacitor around (1 uF, 100 uF) and changed the value of the
> resistors around (1K, 10K) during breadboard prototyping and it didn't
> make a difference and everything still worked.
>
> On the PCB, I replaced the 470 ohm resistor with a 1K and the 10 uF
> electrolytic cap with a 1 uF electrolytic cap. On a breadboard, these
> values worked, so I don't know why the PCB one isn't working.
>
> Any ideas?
>
> -- [ solarwind ] -- http://solar-blogg.blogspot.com/
> -- 
> http://www.piclist.com PIC/SX FAQ & list archive
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