sorry i was very vague
the headlight motor is a simple DC motor, and i'm going to
fit a resitor pot to the headlight to measure the angle of
the headlight, say this pot gives me 80 when the light is
down and 200 when fully open, the pot in the dash will give
0 to 255 ofcourse. so i'll need 0 to equal 80, 200 to equal
255, AND every 2.125 steps of the dash pot correspond to 1
step of the headlight pot. i can't measure .125 from a pot.
but, i'll measure the dash pot(say 60) divided 2.125 =
28.23.. so that's 28 steps for the headlight pot + the
bottom position(80) = 108, so now i work out wich way to
turn the motor untill i reach 108. that way i hope to use
the full range of the dash pot.
now you can see i need division routines, i need to store
top and bottom levels while the power is off, and i also
need to constantly calculate what position the dash pot
works out to be for the headlight pot. i don't dare remove
the current motor and replace it for a stepper, also
remember everything needs to be done for both headlights :(
can you think of a simpler method?
thanks for your advice

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