Sounds like it to me

I assume you are using a D/A to move the pot in the headlight? (seems
strange).  Anyway, you want to make the high end of the dashboard pot set to
the maximum voltage of your A/D.  Now, presuming you are using one of the
PIC 10 bit A/D, and lets just assume, for the sake of argument, your D/A is
an 8 bit D/A, just shift the dashboard pot position right 2 bits before
sending it you to the D/A.

If you are using a stepper motor in the headlight pot, then figure out the
number of steps, and do a little dancing around with the dashboard pot
voltage to make the stepper count work out.  Watch out for your A/D
resolution, though.

I am really agin complicated, but I doubt you have to worry about slow.
Physical things like a pot are amazingly slow compared to the PIC.

72/73 de WB8RCR    http://www.qsl.net/wb8rcr
didileydadidah     QRP-L #1446 Code Warriors #35

----- Original Message -----
Sent: Saturday, January 03, 2004 9:58 PM
Subject: [PIC] : car headlight control


my concern is the code is getting too big and complicated
for such a simple device, and maybe too slow?
is there an easier way?
thanks

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