using L298n as dual motor driver-- please help

Thread Starter

FahadAhmed

Joined May 28, 2009
1
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.
 

Attachments

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:
Top