Motors that can be driven slowly with 5volts

Discussion in 'Homework Help' started by Siyom, Apr 2, 2013.

  1. Siyom

    Thread Starter Member

    Aug 9, 2012
    33
    0
    I'm designing a solar tracking module and i need to knwo which motor would allow me to slowly move a solar panel,and tilt it towards the sun's insolation.
    Ideally i would have used a linear actuator but it needs 230V mains and also very expensive
    So which motor is would suit this application,and also not too expensive DC,Servo or stepper motors.I dont wanna have to use gears to reduce the speed of the motor
     
  2. panic mode

    Senior Member

    Oct 10, 2011
    1,321
    304
    you need to keep track of position or use sensors to find optimum position.
    steppers are cheap, simple and hold position (can be driven blindly using predefined time table).

    but what is the torque requirement? how big and heavy the panel is? what about wind? what is your budget? what is the voltage of available power source options?
     
    Last edited: Apr 2, 2013
    Siyom likes this.
  3. Siyom

    Thread Starter Member

    Aug 9, 2012
    33
    0
    I have available to me at most 5 volts,few stepper motors utilise such a low voltage,also the panel weighs about a kilogram and has dimensions of 180X292X17 mm.
     
  4. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    You are going to need gearing just for strength against the wind (like Panic Mode said).

    Just buy a cheap "DC gearmotor" from ebay or one of the hobby robot suppliers. These have gearing already built into the end of the motor, you can easily get 100:1 gearing, and a 12v motor will still work ok on 5v although it will be slower (which is what you want).
     
  5. Markd77

    Senior Member

    Sep 7, 2009
    2,803
    594
    Worm gears are good, because the wind can't force the motor to turn like it can with normal gears.
     
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