l298 current sensing

Discussion in 'The Projects Forum' started by elleader, Mar 25, 2011.

  1. elleader

    Thread Starter New Member

    Mar 25, 2011
    5
    0
    i am using l298 to control 2 dc motors & i used pins 1 & 15 to sense the current through 0.5 ohm resistor by ACD in PIC , but there is a problem that when the load increase at the first motor the current at the second affected ,the same for the second motor too, i don't know why , i can't know the real current of each motor because of this problem , i need help [​IMG] ,,
    thanx in advance ​
     
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,795
    951
    Post more information. Post the schematic. Post any pictures or information you have on the motors.

    More info equals more help.
     
  3. elleader

    Thread Starter New Member

    Mar 25, 2011
    5
    0
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    I'll bet that you have a poor ground side connection on your Rs1 and Rs2.

    [​IMG]
     
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