BLDC motor code

Other Hardware Motors, Mechanics, Power and CNC
1

I've been using this code to drive a BLDC motor with a 150 amp ESC. I was wondering if there is anything that could be adjusted in the code that would make the motor run smoother. It may be mechanical but if there is anything I can try in the code I'd like to start there. Thanks`

#include <Servo.h> //Using servo library to control ESC
Servo esc; //Creating a servo class with name as esc
void setup()
{
esc.attach(10); //Specify the esc signal pin,Here as D10
esc.writeMicroseconds(1000); //initialize the signal to 1000
Serial.begin(9600);
}
void loop()
{
int val; //Creating a variable val
val= analogRead(A0); //Read input from analog pin a0 and store in val
val= map(val, 0, 1023,1000,2000); //mapping val to minimum and maximum(Change if needed)
esc.writeMicroseconds(val); //using val as the signal to esc
}
2

What is attached to pin A0? Maybe there is some electrical noise there? A simple hardware filter could help, or doing a moving average filter in software. You could try printing val to the serial monitor, or serial plotter, to see if there are any variations.

3

Thanks for responding, A0 goes to the wiper of a pot, 5v and gnd. the other terminals. D10 is the signal out to the ESC. I mainly wanted to see if changing any of the values in the code would would help to make the motor smoother and start softer.

4

Avoid jumps in the speed val. Use loops to slowly increase/decrease the value when changing the speed.

5

Sounds promising but how do I do that?

6

Something like this (untested):

while (newVal > val) {
  val += 1; //adjust step to fit
  esc.writeMicroseconds(val);
  delay(1); //adjust delay to fit
}

The same for deceleration.