Bts 7960 motor acceleration and deceleration curve

Projects Programming
1

Hello! I am new to arduino and I want to control a dc motor with the bts7960 driver and I need the code to have soft start and stop, can someone help me with this?

#include "BTS7960.h"

const uint8_t EN = 8;
const uint8_t L_PWM = 9;
const uint8_t R_PWM = 10;

BTS7960 motorController(EN, L_PWM, R_PWM);

void setup() 
{
}

void loop() 
{
  motorController.Enable();

  int speed=127;

  motorController.TurnRight(speed);
  delay(2000);

  motorController.Stop();
  
  motorController.TurnLeft(speed);
  delay(2060);

  motorController.Stop();
  motorController.Disable();
  delay(5000);
}
2

Try this code (not tested).

#include "BTS7960.h"

const uint8_t EN = 8;
const uint8_t L_PWM = 9;
const uint8_t R_PWM = 10;
int speed = 0;

BTS7960 motorController(EN, L_PWM, R_PWM);

void setup()
{
}

void loop()
{
  motorController.Enable();

  for(speed = 0; speed < 255; speed++)
  {
    motorController.TurnRight(speed);
    delay (100);
  }
  delay(1000);
  motorController.Stop();

  for (speed = 255; speed > 0; speed--)
  {
    motorController.TurnRight(speed);
    delay (100);
  }
  delay(1000);
  motorController.Stop();
 for (speed = 0; speed < 255; speed++)
  {
    motorController.TurnLeft(speed);
    delay (100);
  }
  delay(1000);
  motorController.Stop();

  for (speed = 255; speed > 0; speed--)
  {
    motorController.TurnLeft(speed);
    delay (100);
  }
  delay(1000);
  motorController.Stop();
  motorController.Disable();
  delay(5000);
}
3

25.5 sec? (0.1 * 255)

4

From
"https://github.com/luisllamasbinaburo/Arduino-BTS7960/blob/master/examples/BTS7960_PWM/BTS7960_PWM.ino

  for(int speed = 0 ; speed < 255; speed+=10)
  {
	motorController.TurnLeft(speed);
	delay(100);
  }
5

sorry ... missed that

6

Soft is an adjective without measure.

Something can be smooth or violent in 25 sec.

But the most important thing is to try to help OP and not discuss incommensurables.

7

i think it's helpful to the OP to quantify performance
i'm curious what the OP things soft start means

8

Thank you all for the help, it worked as I expected but it will be very difficult for me. I have created a robotic arm with linear actuators. and controlling 3 motors with a code like this makes it very difficult to make a program. Does anyone know another way? The actuators have potentiometer feedback. what I have done with arduino was to make a manual joystick with 3 potentiometers and every time I move them it makes the actuators move forward or backward respectively, but now I need something more precise like generating a program that runs indefinitely. thanks for the contributions

9

thank you! it has worked perfect