Control Brushed motor with ESC

[julian-f1]

hello I want to realize the openRC-F1 project and I use an arduino nano and an HC-06 bluetooth module to control the motor with the ESC.
I manage to run the motor by putting fixed values ​​in the code but I can't control it remotely with my phone and a slider. here is the code I am using:

#include <Servo.h>
#include<SoftwareSerial.h>
  
Servo esc;
SoftwareSerial mySerial(2, 3); // RX, TX
char Throttle;
  
void setup() {
  esc.attach(9); //ESC Pin
  delay(100);
  esc.writeMicroseconds(1500);
  Serial.begin(9600);
  mySerial.begin(9600);
  delay(2000);

}
  
void loop() {
  if(mySerial.available()){ 
  Throttle = mySerial.read();
  Throttle = map(Throttle, 1000, 2000, 2000, 1000); 
  esc.writeMicroseconds(Throttle);        
 }
  delay(100);

}

voici l'application qui doit faire varier la vitesse du moteur :

[johnwasser]

@julian-f1

Throttle = mySerial.read();

A single byte can only send values from 0 to 255. You then go on to treat "Throttle" as a number from 1000 to 2000.

Does the Bluetooth app send a value from "1000" to "2000"? To read that you can use:
Throttle = mySerial.parseInt();

[julian-f1]

Thank you very much for your help, yes the app send a value between 1000 and 2000 but i can change to 0 -> 255 if its necessary.
how do I match 0 to 1000 and 255 to 2000? 1000 is the maximum reverse speed value and 2000 the maximum forward speed value. I tried to integrate your command line but without success

[image]

[johnwasser]

I would start by checking the bluetooth data:

#include<SoftwareSerial.h>
SoftwareSerial mySerial(2, 3); // RX, TX
  
void setup() {
  Serial.begin(9600);
  delay(200);
  Serial.println("Sketch started");

  mySerial.begin(9600);
}
  
void loop() {
  if(mySerial.available())
    Serial.write(mySerial.read());
}

Upload this sketch and see what shows up on Serial Monitor when you end Bluetooth data.

[julian-f1]

I started checking that the arduino was indeed receiving the data and it is. here the arduino receives the correct value that I sent. The motor is then supposed to run at the speed corresponding to 1399 as if I simply did: esc.writeMicroseconds(1399);
The engine control is random and partially works with bluetooth. I think my code design is wrong.

[johnwasser]

@julian-f1

The engine control is random and partially works with bluetooth.

What throttle values are you seeing if you print the throttle values to Serial?