using L298n as dual motor driver-- please help

Discussion in 'General Electronics Chat' started by FahadAhmed, May 30, 2009.

  1. FahadAhmed

    Thread Starter New Member

    May 28, 2009
    1
    0
    i am trying to use L298 as dual motor driver .
    the ciircuit i am using is given in the attachment as ( the compact motor driver).
    but it is not working. the output accross pins 2&3 is coming out to be .2v instead of 18v. i am providing 5v each to 5,6, and 7 and 9.( l1 l2 & e1-2 and logic voltage) respectively. and 18v to pin4.
    please tell how to troubleshoot this problem.
     
  2. StayatHomeElectronics

    Well-Known Member

    Sep 25, 2008
    864
    40
    You have to have the inputs on 5 and 7 at different logic levels.

    Here is the data sheet for the part. Look at Figure 6, I think it is similar to what you are trying to do. There is a chart that shows the logic levels for forward, reverse, fast motor stop, and free running motor stop. The logic level being the same results in fast motor stop.

    http://www.st.com/stonline/products/literature/ds/1773.pdf
     
    Last edited: May 30, 2009
Loading...