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3.3v to 5v converter

Discussion in 'General Electronics Discussion' started by kingsna1, Mar 22, 2012.

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  1. kingsna1

    kingsna1

    3
    0
    Mar 22, 2012
    Hello there,

    I have a project whereby i am hooking up an arduino to my iphone. I already have a REDPARK serial cable to communicate effectively from my iphone to the arduino and vice versa and it works really well. From my arduino i have a ultrasonic sensor that needs to be supplied with 5V-80mA, so what i want to do is use the power pin out on the iphone (3.3V) to power it . Is there anyway of stepping up 3.3V to 5V ?
     
  2. GreenGiant

    GreenGiant

    835
    6
    Feb 9, 2012
    you would have to use an amplifier circuit of some kind

    Why not just use the 5V output from the arduino? (they all have at least 1)
     
  3. kingsna1

    kingsna1

    3
    0
    Mar 22, 2012
    Well my idea was to use the 3.3v to supply both the arduino and the sensor.
     
  4. GreenGiant

    GreenGiant

    835
    6
    Feb 9, 2012
    That seems like it would draw a lot from the Iphone...

    What kind of arduino do you have?

    You would probably be better off getting a battery pack for the arduino, it would last a lot longer, and would preserve the battery of your phone
     
  5. kingsna1

    kingsna1

    3
    0
    Mar 22, 2012
    Arduino pro mini - the 3.3V one. Its just that the sensor i want to use is at 5v.
    A Battery pack might be the way to go.
     
  6. GreenGiant

    GreenGiant

    835
    6
    Feb 9, 2012
    Yea I would say use the battery and then draw from that to get the 5 volts that you need
     
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