help designing a circuit

Discussion in 'The Projects Forum' started by lokeycmos, Dec 23, 2012.

  1. lokeycmos

    Thread Starter Active Member

    Apr 3, 2009
    so im putting together a 3 "cylinder" selenoid motor. it will have 3 selenoids acting as "pistons" the selenoids are 120 degrees apart from eachother on the crankshaft. the next step is designing the triggering circuitry. the selenoids operate on 24VDC and only draw a few hundred mA. im looking for input on the circuitry. i would like to make it adjustable as far as how long each coil is turned on when it is triggered. what would be the best triggering method? there are reed switches, hall effect sensors, and optical detectors. any help would be appreciated!
  2. Sensacell

    Well-Known Member

    Jun 19, 2012
    Use slotted optical switches.

    Then you can make the "cam" out of cardboard and tune your engine with pair of scissors- simple, easy.