Quote Originally Posted by champion
No, it's a NTE1960.
Your regulator should be fine, rated at 1A...what are you feeding your regulator with? A wall type plugpack or a benchtop powersupply?

Yes, Sayzer also has a good idea.

I'm wondering whether you just have a bad Pot.
Have your tried buying another linear potentiometer?
I have at least 50 or so hanging around from equipment that has been scrapped :-)
Useful for many projects.
I throw in a MKT type capacitor and works well...
Even the cheap and nasty greencaps are ok

I also like using wire wound types, doesn't jitter much and provides a clean read, also normally quite low in resistance. U might need to add a resistor in series with it... and play around with the scale values.

what about your LCD display?
Start up pause?
are you clearing the display or just writing over old values?

I am acutally a little suprised, as there is really not much that can go wrong.
I assume you have a PIC 16F84A with the appropriate powersupply, a crystal...an LCD and POT attached with 2 wires and a cap. Right?

When you say it moves erratically, does it move 1 or 2 values up or down during idle? Or does it move in much bigger increments?