Jacopo Monegato wrote 2011-09-26 18:57:
>
> but if i touch to some random and unconnected parts...

Are those "unconnected parts", parts of the PIC ?
This sounds as a open-CMOS-input problem.
Do you have any I/O pin that are inputs (which is the
default if you do not config them at all) and not
connected to anything ("open") ?

Jan-Erik.
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