Electronics Question...

["Ian Lowe" <ian@xxxxxxx>]

Been debugging one of the wackiest problems I have ever seen over the
festivities, where writing a value to EEPROM failed (although the rest
of
the circuit worked perfectly) After some helpful souls trying the code
out
for me, I figured out that the problem was power related. :

I'm using a 78L05 to derive a 5V supply from a 12V feed, and only
getting
4.7 Volts (!!) which is great, right up until the PIC tries to do
something
juice intensive, at which point, it fails..

I have tried dropping a 220u cap across the 5v-0v feed, thinking that
would
give a little reserve for intensive ops, but no joy..

I don't want to bore the bits off of the list at large, so can anyone
who
wouldn't mind giving a point in the right direction drop me a mail?

Ta muchly, and I hope that yesterday's dinner has largely settled by now
;)

Ian.



http://www.automatedhome.co.uk
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