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Help with motor driver module

jehielmartinez

I make an Arduino standalone to drive a simple bluetooth RC Car from my Android phone. Using a

ZITRADES L9110S DC/Stepper Motor Driver Module, a Tamiya double motor gearbox and a HC-06 Bluetooth module.


When I run my code on the Microcontroller eveything works fine, then I plug the Motor Driver  and everything fails.

I need help with this issue? I dont know what's the problem.

I plug just one motor and works, but it doesnt works with the two motors plugged on the Driver Module.

T


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  • 0

    Thank you for your reply.

    Here's the problem more detalied. Sorry for the crappy solder job. I was soldering and desoldering things trying to fix it

    image

    image

    WHEN I CONNECT  THE MOTOR DRIVER VCC TO THE POSITIVE JOINT ON THE BATTERY PACK WITH A ALLIGATOR CLIP. IT WORKS!!

    image

    THEN I CONNECT THE DRIVER VCC TO POSITIVE 5V ON THE OUTPUT OF THE L7805 WITH AN ALLIGATOR CLIP. IT WORKS!!

     

    image

    OK! I WILL SOLDER THE DRIVER VCC TO THE OUTPUT OF THE L7805. IT DOESN'T WORK!! image

    image

  • 0 in reply to jehielmartinez

    I had something similiar happen to me on a circuit a while back. As it turned out my load had a capacitor that was pulling my Vcc low and resetting my arduino. When I used the jumper wires it worked ok. The jumper wires have a measureable resistance compared to the direct wiring and this acted like a buffer that prevented the microprocessor from resetting. Try putting a low value resistor in place of the direct wire if you want to test this possibility.

    John

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  • 0 in reply to jehielmartinez

    I had something similiar happen to me on a circuit a while back. As it turned out my load had a capacitor that was pulling my Vcc low and resetting my arduino. When I used the jumper wires it worked ok. The jumper wires have a measureable resistance compared to the direct wiring and this acted like a buffer that prevented the microprocessor from resetting. Try putting a low value resistor in place of the direct wire if you want to test this possibility.

    John

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