Question Wind simu

Hello, after some research, here is where I am to create a wind simulator with 2 PC fans:

2 SUNION DC 12 V 7.4 W PC fans - taken from an old xenon PC

1 ELEGOO MEGA 2560 R3 arduino board - given by a friend who didn't use it

I asked ChatGPT for an arduino code to control 2 PC fans for FLyPT Mover and here is the code in question, if anyone has the knowledge to check but it seems pretty good to me!!

// Définir les broches PWM pour les ventilateurs
const int fan1Pin = 9;
const int fan2Pin = 10;

// Variables pour stocker les vitesses des ventilateurs
int fan1Speed = 0;
int fan2Speed = 0;

void setup() {
// Initialiser la communication série
Serial.begin(115200);

// Configurer les broches des ventilateurs en tant que sorties
pinMode(fan1Pin, OUTPUT);
pinMode(fan2Pin, OUTPUT);

// Initialiser les ventilateurs à l'arrêt
analogWrite(fan1Pin, 0);
analogWrite(fan2Pin, 0);
}

void loop() {
// Vérifier si des données sont disponibles sur le port série
if (Serial.available() > 0) {
// Lire les données entrantes
String data = Serial.readStringUntil('\n');

// Analyser les données reçues
if (data.startsWith("FAN1:")) {
// Extraire et convertir la vitesse du ventilateur 1
fan1Speed = data.substring(5).toInt();
// Limiter la vitesse entre 0 et 255
fan1Speed = constrain(fan1Speed, 0, 255);
// Ajuster la vitesse du ventilateur 1
analogWrite(fan1Pin, fan1Speed);
} else if (data.startsWith("FAN2:")) {
// Extraire et convertir la vitesse du ventilateur 2
fan2Speed = data.substring(5).toInt();
// Limiter la vitesse entre 0 et 255
fan2Speed = constrain(fan2Speed, 0, 255);
// Ajuster la vitesse du ventilateur 2
analogWrite(fan2Pin, fan2Speed);
}
}
}


I'm waiting for my dual motor controller to manage my 12 V fans with my arduino card.

For the moment we have this, if anyone has a better designed arduino code, I'm interested, I will receive the material on Sunday, I could test if it already works with the code proposed by ChatGPT.

Thank's for the link !!

Here my sim Wind ! run with simhub perfectly !

the vidéo link who help me :

The vidéo link it's not me ! just help me for my simu wind !

The mine :

Another code that works when I send the data to the arduino monitor: 000 255, motor 2 is running, 255 000, the right motor is running and if I put 255 255 both are working.

Problem I put <L> and <R> with an output which gives me 000 000 under flyPT mover nothing seems to come out, as if arduino did not understand the sending of FlyPT ???? ?
Help ! I don't see what is wrong, the code works very well under arduino with the monitor, why does it not work with FlyPT???

// Define pins for L298
#define ENA 10
#define IN1 8
#define IN2 9
#define ENB 5
#define IN3 7
#define IN4 6

void setup() {
// Initialize serial communication at 115200 bits per second:
Serial.begin(115200);


TCCR2B = TCCR2B & B11111000 | B00000101;

// Set all the motor control pins to outputs
pinMode(ENA, OUTPUT);
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(ENB, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);

// Initially stop both fans
// stopFans();
}

void loop() {
// Check if data is available to read
if (Serial.available() > 0) {
// Read the incoming string:
String command = Serial.readStringUntil('\n');

// Parse the command
parseCommand(command);
}
}

// Function to parse and execute the command
void parseCommand(String command) {
// Example command format: "000 000"
if (command.length() == 7) { // Ensure the command is the correct length
int f1Value = command.substring(0, 3).toInt();
int f2Value = command.substring(4, 7).toInt();

// Constrain values to 0-255 range
// f1Value = constrain(f1Value, 0, 255);
// f2Value = constrain(f2Value, 0, 255);

// Control fans
controlFan1(f1Value);
controlFan2(f2Value);
}
}

// Function to control fan 1
void controlFan1(int speed) {
if (speed > 0) {
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
analogWrite(ENA, speed);
} else {
analogWrite(ENA, 0);
}
}

// Function to control fan 2
void controlFan2(int speed) {
if (speed > 0) {
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
analogWrite(ENB, speed);
} else {
analogWrite(ENB, 0);
}
}

// Function to stop both fans
// void stopFans() {
// analogWrite(ENA, 0);
// analogWrite(ENB, 0);
// }

I'm repost here, because it's more simple for mee. Sorry. I'have posted to other "forum wind" but no response.

That's it !

I found the right code for my fans with the right data to send with FlyPT Mover!

So below is the code (with the good trick which avoids a REMAP of the data, you have to put the sync at 31 Khz with the line TCCR3B = TCCR3B & B11111000 | B00000001;
TCCR2B = TCCR2B & B11111000 | B00000001; this is blah operating frequency of the fans in reality):

And the photo of FlyPT mover to send the right data!

#define BRAKEVCC 0
#define CW 1
#define CCW 2
#define BRAKEGND 3
#define CS_THRESHOLD 100

int inApin[2] = {8, 9}; // INA: Clockwise input - Entrée dans le sens des aiguilles d'une montre
int inBpin[2] = {6, 7}; // INB: Counter-clockwise input - Entrée dans le sens inverse des aiguilles d'une montre
int pwmpin[2] = {5, 10}; // PWM input - Entrée PWM
int cspin[2] = {2, 11}; // CS: Current sense ANALOG input - CS : entrée ANALOGIQUE de détection de courant
int enpin[2] = {0, 1}; // EN: Status of switches output (Analog pin) - État de la sortie des commutateurs (broche analogique)
int statpin = 13;

byte bytesBuffer[4] = {0};

void setup()
{
Serial.begin(115200);
pinMode(statpin, OUTPUT);

// Initialize digital pins as outputs - Initialiser les broches numériques en tant que sorties
for (int i=0; i<2; i++)
{
pinMode(inApin, OUTPUT);
pinMode(inBpin, OUTPUT);
pinMode(pwmpin, OUTPUT);
// pinMode(pwmpin, 0);
analogWrite(pwmpin, 0);
}

// Initialize braked - Initialiser freiné
for (int i=0; i<2; i++)
{
digitalWrite(inApin, LOW);
digitalWrite(inBpin, LOW);
}
}

void loop()
{
TCCR3B = TCCR3B & B11111000 | B00000001;
TCCR2B = TCCR2B & B11111000 | B00000001;

if (Serial.available())
{

bytesBuffer[0]=bytesBuffer[1];

bytesBuffer[1]=bytesBuffer[2];

bytesBuffer[2]=bytesBuffer[3];

bytesBuffer[3] = Serial.read();

if(bytesBuffer[0] == 0 && bytesBuffer[1] == 0)

digitalWrite(inApin[2]=8, HIGH);
analogWrite(pwmpin[2]=10, bytesBuffer[2]);


digitalWrite(inBpin[2]=7, HIGH);
analogWrite(pwmpin[2]=5, bytesBuffer[3]);
}
}


With ceal you can therefore control right and left independently.

Here for my vidéo in the 2Dofs

an here for my video for FlyPT Mover :

The armchair with 2 articulated arms found on Amazon for €15 per arm!

Armchair currently finished, with Flypt mover you can start the fans as you want!

Wind, canopy and RPM settings to manage all of this!

Thanks again to the community!

The price has increased slightly since I took them (I had a promotion...).

But they are very very good, everything is tight and holds well, and can easily be adapted to attach the fans to them.

Sincerely !

I don't understand, my link to Amazon doesn't appear???

I leave you here the full name to type in Amazon to find the article: "
Phieeseriy Support Tablette Lit en Aluminium, Portable Support Vidéo Bras Articulé Porte pour iPad 10/9/8/7/6/Pro 12.9/11/Mini 6 5 4/, Support de Bureau Flexible et Rotatif à 360° pour Téléphone 4-7""

And so now, with the covers made by my brother on his 3D printer (model easily found on intent and scaled for 12 cm venilos). 10 euros of plastic and 22 hours of printing to make both! Works perfectly