Ball valves - H Bridge fake proportioning

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im using ball valves controled h bridge home brew set up.

ive seen posted on web site

  " electric ball valves going switched using h bridge. 2 wire valves, eg open forward voltage , close reverse voltage. have made sketches in arduino allow me fake proportioning(sorta) using pwm control speed , time control total opening/closing of valve. valves have can position reliably , repeatably using method "

this usefull havent first clue how sketch it.

can 1 give me shove in right direction please ?

tia

pesh

do experimenting valve have selected. find out how long takes open , close valve. divide time number of "steps" want have valve stop at. start @ 10 steps. each time period should open or close valve 1/10th of total.


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