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Thread: power supply for line following robot

  1. #1

    Default power supply for line following robot

    hi friends!
    i have made a line follower robot. I have used IC 7805 as voltage regulator but i have no idea about the kind of battry i should use.
    i have used 12V 300rpm DC MOTOR, IC L293D and ATMEGA16. So kindly tell me if i should use an 8volt 660 maH lithium ion rechargeable battery or i should use 6v lead acid battery.[/code]

  2. #2
    Super Moderator T-1000 docel's Avatar
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    Your question has the answer .... !!

    The rest of the details are in the respective datasheets of the components( 12V Motor !!).
    docel
    ^Anything is possible..
    after YOU prove it!!

    http://bangalorerobotics.tripod.com

  3. #3
    Junior Member Newbie
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    I suggest you use a 5 or 9 Volt battery for your ATMEGA circuit and a separate one for the motors. You can get a rechargeable one for testing.

    Lead acid batteries are notorious for losing charge very quickly. If you'd be in a position to recharge them after each run, then it's ok. Else you'll be better off with the Lithium ion batteries.

  4. #4
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    Hey Razorlight !
    what battery gives 5 v ??
    I'd LOVE to have that !

  5. #5
    Senior Member T-1000
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    Lead acid batteries are notorious for losing charge very quickly.
    8O

    I thought they were notorious for their weight....

    ANd you CANT use a 5V OR a 9V battery.. use the 5V without a regulator and the 9V with a regulator.
    .... I didnt do it ! ....

  6. #6
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    Quote Originally Posted by allbits
    I thought they were notorious for their weight....
    Agree with that...

  7. #7
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    Dunno any battery which provides a direct 5V.

    And yes, User allbits is right, you'll need to use a voltage regulator like 7805 to step down from 9V to 5V.

  8. #8

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    can a small transformer be used as power supply??

  9. #9
    Administrator T-1000 rao's Avatar
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    Transformer transforms one AC voltage to another AC voltage. You will need a rectifier to convert the AC to DC..but do you want your robot to be wired to an AC power socket? And yes you can use a transformer with a rectifier.

  10. #10

    Default

    so i need a 9v battery with a regulator 7805 for the micro
    and a separate 12v supply for my 100rpm 12v motor
    Last edited by jeetbuz; 12-29-2009 at 04:02 PM.

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