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L293D with 12V motor issue? Answered

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Hi,All

Now i wanted to control a 12V motor with a L293D chip.my purpose is to make the motor go forward and reverse with the control of Arduino.I got a wiring from internet.but I think is incomplete wiring.the arduino uses 5v power rail and the motor uses 12v power rail.from the wiring i cannot find the GND with the 12V power.so strange.i want to know how the 12V rail GND wire goes?

Shanno.G


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rickharrisBest Answer (author)2016-02-12

Yes ground your 12 volt supply with the arduino ground (negative). i.e pins 4,5 - 12 and 13.

Please note:

The L293 D has a current limit of ONLY 600 Ma or just over 1/2 an amp. Your motor may well exceed this. As the L293D has an auto over current cut off this makes it look like it isn't working or works in strange ways.

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gada888 (author)gada8882016-02-12

So now i will try L298N motor module instead.as the L298 supply 2A current to the motor.

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rickharris (author)gada8882016-02-12

That will probably be better.

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nokereko (author)2016-03-12

What is the Arduino

CODE

???

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Josehf Murchison (author)2016-02-11

The 12 volt ground is the same grounds the Arduino is connected to.

I would optocouple that just to be sure 12 volts don't feed back to the Arduino but the 12 volt ground is the same 4 pins as the Arduino is connected to.

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