I did burn one out when I setup my traction loss which loaded the motor more and ran the drivers much hotter - had to add some cooling for it. I have been successfully using them like this for some months now but my sim doesn't load the motors much and they run pretty cool. While this works well (for me) and can be used with existing Arduino code it has the downside of overriding the temp sensing of the devices as the PWM is constantly resetting it - SO DON"T LET THEM RUN HOT if using this technique. So rather than the PWM alternating the H-Bridge switching it is actually rapidly enabling/disabling the entire H-Bridge. This is cheating a little as it is using the "driver enable" pins for the PWM. (Sorry - I need to learn how to do a diagram with Fritzing or something) L_EN connect to Uno R3 Motor PWM out (ie connect to same pin as above) The way I have currently connected them is as follows: They require direct drive of the highside/lowside switches for each motor terminal. They are a little different in their interface to most used on this site though. Hi Claudemir, I am using these H-Bridges at the moment (nice and cheap!).
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