The idea with the park position sensor, is that the intermittent wipe is
achieved by a PWM with a variable frequency in the O to .5Hz and a variable
mark space ratio between 0 and 100%. . Thus .1 hz at 50% would give 5 secs
on and 5 secs off, at 10% would give 1 sec on 9 secs off. at 100% always on
at 0% always off. etc
You work too hard - that can easily be achieved with a simple timer circuit
outputting a fixed-duration pulse at a variable timing window. With the
park position available as you say, a simple relay-driving pulser would do
the job here.
a 555 set up as an astable multivibrator would be just the ticket...
aj"Tech weenies R. Us"r
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