circuit wiring question

Discussion in 'The Projects Forum' started by alexfloyd21, Jan 28, 2012.

  1. alexfloyd21

    Thread Starter New Member

    Jan 28, 2012
    9
    0
    I need help wiring the following circuit board. I've attached it as a jpg. I'm brand new to this, so detailed information about components will be great.
     
  2. Pencil

    Active Member

    Dec 8, 2009
    271
    38
    Can you describe what you are trying to do?

    Starting with a description of what is needed to be
    accomplished will determine what components are
    needed.

    I'll start with some questions:

    What components for this system do you already have?

    What is the current requirements of the pump motor?

    Does the pump need to run for a known fixed time, or does
    the time need to be adjusted?
     
  3. alexfloyd21

    Thread Starter New Member

    Jan 28, 2012
    9
    0
    I'll start with some questions:

    What components for this system do you already have? I have a breadboard, wires, resistors, potentiometers, and pump

    What is the current requirements of the pump motor? <380mA

    Does the pump need to run for a known fixed time, or does
    the time need to be adjusted? It will need to be adjusted

    Thanks for helping!
     
  4. Pencil

    Active Member

    Dec 8, 2009
    271
    38
    What other components might you have access to?

    I haven't a clear picture of the overall goal, but with the
    limited description so far, probably going to need: 555 timer(s),
    comparator(s) or opamp(s), and transistors, capacitors, etc. in addition
    to the switch and potientiometer(s).
     
  5. alexfloyd21

    Thread Starter New Member

    Jan 28, 2012
    9
    0
    I apologize for not being clear.

    I have an air bladder that I need to inflate. (I don't know the exact amount of time needed to inflate it, so I'll need to be able to adjust the amount of time that the pump is on.)

    When the circuit is powered, I was wanting to use the potentiometer as a switch. When it is turned to a certain point, the pump will be turned on. (this will be more or less a simulation, so the set point can be set to any particular value)

    I know this is probably something elementary, but I'm brand new to circuits, so I need to know how to wire and program it. (I'm a visual learner so a diagram would be great.) Thanks!
     
  6. Pencil

    Active Member

    Dec 8, 2009
    271
    38
    No need to apologize. When confronted with a problem, the
    information needed to get an answer is not always known at the
    beginning of the process.

    What is the approximate range of time needed for the pump to run?

    How it is done will depend on what components you have access to.

    To get started, look for (GOOGLE) "555 Monostable". Building the circuit
    for the 555 monostable may take care of the pump timing part. Triggering
    the monostable from the potentiometer will be the second part to tackle.
    The complexity of the end product can vary, depending on the details
    of operation you wish to implement.

    The details will determine whether it is elementary or not.

    Keep asking/answering questions, you've come to the right place for help.
     
  7. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    Is the end goal to keep the air bladder inflated between two levels? Can the potentiometer be mechanically connected to indicate the level of inflation i.e. slider pot?
     
  8. alexfloyd21

    Thread Starter New Member

    Jan 28, 2012
    9
    0
    The end goal is just to inflate the bladder and stop.
     
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