Powering Project mit DC motor and L293D

Using Arduino Motors, Mechanics, Power and CNC
1

I’m relatively new to electronics and Arduino projects, and I’ve just completed my first project: an RC car (circuit diagram below).

However, I’m having trouble powering the circuit. Everything works fine, except the motor runs very slowly. The motor I’m using is a 380 Brushed Motor (details linked here). The circuit diagram shows a 9V battery, but it’s clear that won’t suffice. I also tried a series connection of 8x AA batteries (each 2650 mAh), but unfortunately, that didn’t work either.

What would you recommend as a more suitable power source to get the motor running faster? I’d greatly appreciate your suggestions!

Receiver
Receiver1920×2816 182 KB

2

The L293D is likely the 'culprit'.
With the 12V (8 x AA) - what's the voltage across the motor when it's at 'full speed'?
Your diagram indicates that servo is powered from the '12V'. What is its rating (input voltage).

3

The 293D is limited to 600mA continuous output, your motor needs at least 900mA and probably much more with a load.

4

The voltage rating of the servo is 6 V. When the motor is powered with the 12V (8 x AA), the voltage over it (at "high speed") only about 3V.

5

So, you suggest to change the motor control? What would you recommend? Tahnks for your feedback by the way!

6

Auf Wiedersehen.

7

I don't want to suggest something that is not available in your country or is too expensive to ship. Where are you located?

8

Germany

9

This would be ideal

10

Can I suggest to put 5V on the other vcc pin (top right)???.

See datasheet:

11

Thanks! I can get one of these very easily here. Just a small question: What abou a 20A ESC like this here?

12

First try @build_1971 suggestion about the 5V on pin 14 but the L293D may still not provide wnough current.
The ESC will work but I think the big switch is used to reverse directions.