IM NOOB HERE PLS HELP ME :(

How to make l293 motor driver expansion for arduino to support up to 36v? Because i need to control 2 motor dc which is total 24v.

What does total mean in this context? Two 12V motors?

nizamthenizam: How to make l293 motor driver expansion for arduino to support up to 36v?

A quick look at the L293 datasheet shows that it works from 4.5v to 36v.

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If you have 2x12V motors that's still 12V not 24: it's the current you need to worry about I think.

Picked from this side:

This motor driver shield is based on L293D motor driver chip which is designed to provide bidirectional drive currents of up to 1.2 A each bridge with thermal shutdown protection at voltages from 4.5 V to 36V.

So each motor can use 1.2 A at 36 V. But it will get hot.

Johan_Ha: What does total mean in this context? Two 12V motors?

Yes

The L293D is rated for 600mA absolute max continuous. At that current, it will drop (loose) about 2.7volt in H-bridge mode. Leo..

nizamthenizam:
Yes

So you put 12V on the 293’s motor power pin Vcc2, pin 8.

There’s a bit of a voltage drop through the 293, I forget the exact value but I think it’s about 2V (edit : Wawa says 2.7). If you apply 12V you’ll only get about 10V (edit: 9V) at the motor, so you could stick say 14V (edit: 15V) into the 293 to get 12V at the motor.

Something like this, but where it says 9V that would be your 12V (or a bit more).

2dc motors L293.png