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Topic: Rc car vs Arduino (Read 1 time) previous topic - next topic

Keits

Onions, I need 2 H-Bridges because it's not good to power front motor(for steering) with so high current, if I use external power source for L293D.

Onions

Onions, I need 2 H-Bridges because it's not good to power front motor(for steering) with so high current, if I use external power source for L293D.

The motor will only draw as much current as it needs, nothing more. As long as you provide it with the correct supply voltage, it will not blow. V/R=I. If the motor needs 5 volts, and has a 5 ohm coil, it will draw 1 amp of current. If it needs 5 volts and has a 10 ohm resistance, it will draw 0.5A (500mA). As long as you keep the voltage correct, the current will be fine.

Onions.
My website: http://www.harryrabbit.co.uk/electronics/home.html Up and running now! (Feel free to look round!) :D

bjpayton04

Hey Keits,
           Im working on a similar project. Im going to control my rc car from my android. Im in the process of ordering two h bridges. Did the L293D work well for you? did you need a heat sink? thanks

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