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DC 15 seconds motor timer operated via push switch

Discussion in 'Sensors and Actuators' started by bunchofapes, Apr 28, 2017.

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  1. bunchofapes

    bunchofapes

    3
    0
    Apr 28, 2017
    Hello

    I am new to the forum and know nothing of electronics!

    I make automata - mechanical things.. and am looking for advice of where to start on making a push switch operated motor controller

    I want it to do 15 rpm ish
    time 15 seconds from push then switch off.
    repeat pressing doesn't override first press..

    Any help appreciated


    Thanks

    Dave
     
  2. Viliuks

    Viliuks

    24
    3
    Dec 5, 2015
    Simplest thing for you would be an arduino which you can program with a modified version of C.
    Other than that you'd need to make your own circuit to do so.
     
  3. Minder

    Minder

    2,948
    623
    Apr 24, 2015
    Simpler still is a 555 timer.
    M.
     
  4. KMoffett

    KMoffett

    696
    68
    Jan 21, 2009
    So you need the motor, controller, and an on-timer?
    More details would help. Like supply voltage available, motor torque...what you are trying to do.

    Ken
     
  5. Bluejets

    Bluejets

    3,991
    824
    Oct 5, 2014
    So you want the motor to do approx. 15 rpm in 15 seconds?
     
  6. bunchofapes

    bunchofapes

    3
    0
    Apr 28, 2017
    Hello, thanks for the replys

    Right here is a vid of the automaton (unfinished) being run from a drill.. I calculated I need nearer 24 rpm



    I have an acdc power adapter that outputs 3,6,9 and 12v I think

    I have looked at some products and think I could use this kit

    https://www.technobotsonline.com/kitronik-relay-board-kit-with-timer-function.html

    and this motor

    https://www.technobotsonline.com/918d250112-1-re-280-1-4mm-metal-geared-motor-250-1.html

    Is that correct?

    Thanks in advance

    dave
     
  7. Bluejets

    Bluejets

    3,991
    824
    Oct 5, 2014
    Seems rather expensive for a simple mechanism.

    I would tend to go this way or similar.
    http://www.ebay.com.au/itm/3V-6V-DC...453741?hash=item1ec5acc7ad:g:8sIAAOSwDNdVk8kH

    Everything you need except power supply.(DC required...probably around 1 amp capacity or batteries to suit)

    If you need many individual mechanisms as in the video, you could select just one motor gearbox arrangement, a power supply and a speed controller all with larger load capability and parallel up the mechanism.
    That way it would always be in sync.

    As we have no idea how you would go about building it we therefore have no idea exactly what gear to select other than to say it looks like very little power is required as shown.

    A 555 timer module ( as M suggested) will give you your monostable run time.
    You can build yourself or buy the same fron Ebay to suit a wide range of supply voltages and run times and most come with a relay which would connect to your motor/speed control for around Aus$4.00.
     
    Last edited: Apr 30, 2017
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