[Sussex] A Little Hardware Help

[Desmond Armstrong]

> I guess that the problem lies in the power input to the chip.  I'm using
> a Bandridge BE-516 mains transformer (regulated) to provide the power,
> but do I need any form of circuit on this supply, and if I do what?  Of
> course I am completely clueless at this point as to how to find out what
> is wrong.  I know the PIC isn't blown because if I place it back in the
> programming/test board it works there perfectly.
>
>   

Do be careful, you should use a regulated power supply ideally one of 
those 3 pin regulator ICs on your board such as TK11320 78L02.
If you are overvolting or undervolting although you might not damage the 
device, it might not work. They are not very tolerant of supply voltage 
variations.