Re: PIC18F4620
Hi.
Something sounds very wrong - I wonder if you are measuring the currents correctly ?
The Max chip can only give out about 200ma from 2 AA batteries so I cannot see how that is going to supply 1A at 5v ...?
Also you do not mention anything about things getting hot or smoking ? - at 1A something should be getting red hot.
Go back to basics, find a good 5v source or 3 AA batteries, connect up just your Pic chip, it should use about 7 - 10 ma, if Ok add the LCD, without any backlight, this should add another 7 - 10ma.
When you connect the lcd do you get a valid display ?
What is the servo motor you are using - what interfaces it with the Pic ??