Re: Problem with PIC & LCD display



Steve H wrote:

Spehro Pefhany writes

What else EXACTLY is this PIC circuit connected to (off board in
particular)? How long is the cable to the LCD display? What kind of
equipment is this? Can you link to a photo? Is it a proper PCB or a
plugboard?

Have no photo to hand and the equipment isn't with me just now. Fully
assembled it comprises the PIC with LCD, 4 control buttons and several
logic inputs/outputs, four of which control 4 to 16-line latches that
switch solenoids via darlington drivers.

Is the PIC driving the LCD segments directly or does the display have an
onboard controller ?

Another thought btw, add a suitable transorb / TVS across the 5V rails to see
if it helps any. Or even and/or across the 12V input to the 5V regulator.

Graham

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