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A 6v motor (rated ) and Appiled voltage is 12V Answered

I am making a line following robot and using Two Dc motor with L298N motor Driver and applying a voltage of 12V.I have used PWm to control my speed but my motors are behaving abnormally like one rotates and other one is not rotating . WHy ??Any suggestions

Tags:Motors

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Downunder35m

3 years ago

I am in Australia and my car does not start - what is the best way to fix it?

Any chance you see something familiar with both requests? (yours and mine)

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seandogueDownunder35m

Answer 3 years ago

"I am in Australia and my car does not start - what is the best way to fix it?"

Take it to the garage and have someone else fix it. Just say "It makes a boinky noise and won't run" and leave it in their capable hands. ;)

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seandogue

3 years ago

1) Check your wiring on the failed-side motor. The number one problem encountered in electronics builds is a bad connection. It could be something as simple as a frayed wire or poor soldering job.

Word of warning: Reduce your source voltage (or otherwise provide hard output limits that don't exceed your motor rating) until you know the circuit is behaving correctly, With a 12V source, a failure in your PWM could mean 12VDC on that 6V motor and the motor could have burned out. I get why 12V is used, butt that's only safe if the PWM is functioning correctly. Locked to logic HI, that's twice the rated voltage.

2) Also check your individual components. You may have "smoked" one or more of them. It happens to the best of us.

3) Is a single PWM source feeding both motors? If not, check to ensure you are outputting the correct waveform on the failed side. It could be hardware if a discrete PWM or improper coding if the output of a microcontroller/etc. I can't comment on either directly because I have no idea where your PWM signal(s) is(are) coming from.

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rickharris

3 years ago

The L298 has an over current cut out. It is quite possible that your motor is drawing too much current and making the controller it cut off.

have a look at the data sheet. You may need a higher current bridge.

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steveastrouk

3 years ago

Your drive circuit isn't working.