Cheap ESC 20A from China, no reverse/backward

Other Hardware Motors, Mechanics, Power and CNC
1

Hi everybody,

I was trying to find similar topic but I couldn't succeed finding the answer. I bought this ( 20-A-Brushed-Motor-ESC-Speed-Controller-with-Switchable-Brake-for-RC-Car-Boat-Tank hosted at ImgBB — ImgBB ) 20A ESC brushed from China and connected it with Arduino Nano on PWM digital pin. On the other side is Dc 180 motor. Ad says it can run bidirectional, but I can't make it go reverse. It only accepts pulse from 1500 to 2000. Do you have any ideas? Thanks.
I used servo library and tried to send pulse below 1500 to 1000.

2

Welcome to the forum

The page that you linked to has no details of the ESC

How are the motor and ESC powered in your project ?
By the way, it is not necessary to use a PWM pin when using the Servo library

3

@UKHeliBob Hi, thank you.

By 2S, 2x 3.4 batteries

This is the AD:

https://www.aliexpress.com/item/1005006186141643.html?spm=a2g0o.order_detail.order_detail_item.2.2522f19cKYJ1L5

4

Perhaps the slide switch shown in the picture sets the rotation direction, if so, the ad is correct.

5

Unfortunately no. It's brake.

6

Please post your sketch

7

I will, when I come home. But I have tried with example scripts and it's the same.

8

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