L298 gives less power on one output when bot enabled and turned on

Discussion in 'General Electronics Chat' started by Kovács Gergely, Dec 30, 2015.

  1. Kovács Gergely

    Thread Starter New Member

    Dec 30, 2015
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    0
    Hello!
    Not far i have got an exercies to build a line tracking robot on Arduino and L298n microcontroller.

    So the main part of build is done fairly good, but now the robot tracks normally line only when the speed is very slooow.

    I figured out, that is becouse one wheel turning slower, and it is turning slower becouse this motor gets less voltage from output then the other one.

    I am not able to use PWM, so the enable pin is jumped to the ground(so it may turning always on the highest speed).

    AND THE PROBLEM IS: however each side is wired identically, and on input all signals are similar(1-LOW,2-HIGH,3-LOW,4-HIGH), one wheel turning on normal speed, other turning slowly and very poor.

    I have tried turn on the battery the motors, but separately they work fine and as i saw on similar speed.

    What do you think, where should be the problem?
     
  2. RRITESH KAKKAR

    Senior Member

    Jun 29, 2010
    2,831
    89
    I have used l298D with micro and Ht12E/D
    same problem was with my circuit.
    please look and test the circuit again it may be some wire wrong.
    and Enable is +ve i think for working..
     
  3. RRITESH KAKKAR

    Senior Member

    Jun 29, 2010
    2,831
    89
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