Need Wiring Help - Pump Switch

Discussion in 'Electrical & Radio' started by GeekSpeed, Oct 8, 2015.

  1. GeekSpeed

    GeekSpeed Active Member

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    Hey guys.

    I need a little help with setting up the connection to my pump motor. I have one of those Turnigy receiver controlled switches which is connected to my receiver. However, it hat two little red wires that are, I am assuming, supposed to connect to whatever device that switch is supposed to control. So, in the case of a brushed electric motor, how should I wire it? Do both of those wires go to the motor? Do I need to run one wire to the battery? HELP!
     
  2. NickMyers

    NickMyers Admin RCWC Staff

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    One goes to load (motor) one goes to source (battery)

    Your RX ground needs to be the same as your load's ground for this switch btw.
    190074766X370526X29.jpg

    Edit: I hope that you've checked the current draw on your pump. Those little switches are only rated for 10A by themselves
     
  3. GeekSpeed

    GeekSpeed Active Member

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    Ok, thanks. I guess I need to do a y-connection on my black wire from the battery to the motor and connect the other to the + on the motor. Got it.

    I am only running a 380 pump, so I should be ok.
     
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  4. irnuke

    irnuke -->> C T D <<--

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    Just to clarify....the black goes from your battery negative to negative of pump
    the red goes from battery positive to the switch, other red from switch to positive of pump.
     
  5. SteveT44

    SteveT44 Well-Known Member

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    [​IMG]
     
  6. SteveT44

    SteveT44 Well-Known Member

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    If they made a version of this switch that was on at 60% to 100% and another at 0% to 40%, this would be the cheapest solution to triggering two solenoids from one channel.
     
  7. NickMyers

    NickMyers Admin RCWC Staff

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    Last edited: Oct 9, 2015
  8. Nick Park

    Nick Park Member

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    make your own!
    switch-dual-common.gif
    I've ordered the bits and as soon as I've done one, I'll post the results :)
     
  9. Beaver

    Beaver 2020 Rookie of the Year Admiral (Supporter)

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    Servo and micro switch is much simpler. :)
     
  10. SteveT44

    SteveT44 Well-Known Member

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    Analog circuit huh? Real old school. Looking forward to the build thread.
     
  11. irnuke

    irnuke -->> C T D <<--

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    Next time you flip on a light switch, contemplate how simple, robust, and reliable an analog "old school" switch is.
     
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  12. GeekSpeed

    GeekSpeed Active Member

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    Electrical diagrams always look like ancient alien hieroglyphics to me. :-(
     
  13. Nick Park

    Nick Park Member

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    ok, I've tested the circuit. It works ;)

    However there is an error for the dual bit and so I've changed the circuit a bit...
    switch-dual-common.gif
    This will give you the possibility to shoot two cannons with the same channel (up as one and down a second)
     
  14. NickMyers

    NickMyers Admin RCWC Staff

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    Following my comment, and talking to @Tugboat about firing boards, he pointed out to me that Pololu makes pretty much what you want. https://www.pololu.com/product/2803
     
  15. Nick Park

    Nick Park Member

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    Hi Nick, that's so cool! and very small.
    However there is only one output...
     
  16. NickMyers

    NickMyers Admin RCWC Staff

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    get 2, solder together splitter
     
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  17. SteveT44

    SteveT44 Well-Known Member

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    I use this board in my Moggy. The board supports inversion (firing above or below a set point) but no easy way to set that set-point. The default setpoint is at 50% stick throw. No easy way to set that to say 60% on one switch, and 40% on a second inverted switch (which would be required to fire two guns off one channel). This is all a mute point anyway. Both BC and Strike now have affordable options for triggering solenoids. So everybody go out and support your favorite R/C warship supplier! :)
     
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  18. NickMyers

    NickMyers Admin RCWC Staff

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    Document on configuring it says that when you put it into learning mode, you show it the stick range and it picks the halfway point. So if you show it from 50% to 70%, you would teach it 60%.
     
  19. SteveT44

    SteveT44 Well-Known Member

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    I said "no easy way" to configure these switches for the discussed operation. To get it into learning mode requires shorting two small solder pads (on a very small board) and deciphering LED blink patterns. If someone wants to fool around with it the steps are here: https://www.pololu.com/docs/0J60/9.1
     
  20. Maxspin

    Maxspin -->> C T D <<--

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    Here is what I am doing.
    [​IMG]