Simulated Wind using MonsterMoto and ArduinoUno

yobuddy · Dec 21, 2023

I thought your were using different hardware?
https://www.xsimulator.net/communit...-with-arduino-sketch.17963/page-2#post-243250

But if your running the sketch above with a Adafruit Motor Shield V2, then you would want to add these two commands for speed. (click the pencil to add the commands)
Map 0 100 0 255 (you can change the 100 value to your desired top speed)
Pad 3 0

And this will make speed output always have 3 char's for output - 000 thru 255.
And then make sure to send S<Sp1> as you were, and you should be good to go.
Take care!

hansvdm · Dec 22, 2023

yobuddy said: ↑

I thought your were using different hardware?
https://www.xsimulator.net/communit...-with-arduino-sketch.17963/page-2#post-243250

But if your running the sketch above with a Adafruit Motor Shield V2, then you would want to add these two commands for speed. (click the pencil to add the commands)
Map 0 100 0 255 (you can change the 100 value to your desired top speed)
Pad 3 0

And this will make speed output always have 3 char's for output - 000 thru 255.
And then make sure to send S<Sp1> as you were, and you should be good to go.
Take care!
Click to expand...

I did use different hardware but didn't work so switched to this new project

hansvdm · Dec 22, 2023

hansvdm said: ↑

I did use different hardware but didn't work so switched to this new project
Click to expand...

Yes it works, !

hansvdm · Dec 22, 2023

hansvdm said: ↑

I did use different hardware but didn't work so switched to this new project
Click to expand...

Any suggestions how to reduce the speed of the fan's when the rollercoaster moves slowly. When the rollercoaster starts moving the output voltage is 11.58 volf (the powersupply and fan's are 12 volt)

during the ride the fan's slow down and speed up. It looks like the values are reversed. The slower the car is moving the fan's spin faster

@yobuddy

hansvdm · Dec 23, 2023

Richard Ortengren said: ↑

Based on your advice I made a sketch for the Adafruit Motor Shield V2 (AMSv2) using all the hard work of sallerding, Zed, SilentChill, Avenga76, and others. It's an option for people who do not have a Monster Moto or who may have started with a wind sim built for SimHub using the AMSV2 and wish to use their existing hardware with SimTools. The procedures and settings in GameDash remain the same, you just need to load this sketch and it should work with AMSV2. I tested the sketch using the EZDIY 120mm 200CFM 1.3A fans that are recommended in the DIY video tutorials for SimHub like this one:

You should change the Idlespeed setting in the sketch to what you prefer for your rig after you get it running. I left a small Idlespeed value in the sketch so that the fans come on when you load it. That may help with determining if your fans and hardware are wired/working properly without having to load a game. If anyone has any questions I will try to help. The attached file is .txt extension you can change the extension to .ino or copy and paste it into IDE and save. Here is the sketch text in case the file does not work for you:

// Arduino code to achieve wind simulation with the Adafruit Motor Shield V2 instead of the Monster Moto
// Based on the work of sallerding, Zed, SilentChill, Avenga76, and others with inspiration from noorbeast
// Supports right,left and traditional serial speed output from GameDash (R000, L000, S000)
// Adafruit Motor Shield V2 library is required to be added to Arduino IDE interface prior to uploading sketch
// Please wire your two fans to motor ports M1 and M3 on the adafruit Motor Shield V2 (Not M1 and M2)
// This will utilize both mosfets on the board and reduce the potential for overheating with 1.3 Amp fans

// Version Date 01_28_2023

#include <Wire.h>
#include <Adafruit_MotorShield.h>

#define FALSE 0
#define TRUE 1
#define BOTH 0
#define LEFT 1
#define RIGHT 2

// Define a fan idlespeed here if you prefer to have your fans on all the time for ventilation
// A default idlespeed is set so that you know the sketch is working, set to 0 for no fans at idle
#define Idlespeed 20

int Speed = 0;
int bufferArray[4];
int whichFan = BOTH;

// Create the motor shield object with the default I2C address
Adafruit_MotorShield AFMS = Adafruit_MotorShield();

// Set port M1 for Motor 1 (Left fan)
Adafruit_DCMotor *Motor1 = AFMS.getMotor(1);
// Set port M3 for Motor 3 (Right fan)
Adafruit_DCMotor *Motor3 = AFMS.getMotor(3);

void setup()
{
AFMS.begin(); // Initialize the shield
Serial.begin(9600); // Initialize serial communication

// Initialize motors at idlespeed
Motor1->setSpeed(Idlespeed);
Motor1->run(FORWARD);
Motor3->setSpeed(Idlespeed);
Motor3->run(FORWARD);
}

void loop()
{
ReadData();

if (whichFan == BOTH)
{
Motor1->setSpeed(Speed);
Motor3->setSpeed(Speed);
Motor1->run(FORWARD);
Motor3->run(FORWARD);
if (Speed == 0)
{
Motor1->run(RELEASE); // Release the motor
Motor3->run(RELEASE); // Release the motor
}
}

if (whichFan == LEFT)
{
Motor1->setSpeed(Speed);
Motor1->run(FORWARD);
if (Speed == 0)
{
Motor1->run(RELEASE); // Release the motor
}
}

if (whichFan == RIGHT)
{
Motor3->setSpeed(Speed);
Motor3->run(FORWARD);
if (Speed == 0)
{
Motor3->run(RELEASE); // Release the motor
}
}
}

void ReadData()
{
// We need 4 characters - the command followed by three digits

bool haveCommand = FALSE;
bool haveStart = FALSE;

while (haveCommand == FALSE) // can't exit until have a full valid cddd command
{
// where c is a valid char and ddd is a valid 3
// character representation of three digits

// Valid command always starts with an S (legacy for both fans), L (left fan), or R (right fan)
while (haveStart == FALSE)
{
while (Serial.available() == 0); // spin and wait for data
bufferArray[0] = Serial.read(); // have data, read it

if (bufferArray[0] == 'S') //S
{
whichFan = BOTH;
haveStart = TRUE;
}
else if (bufferArray[0] == 'L') //L
{
whichFan = LEFT;
haveStart = TRUE;
}
else if (bufferArray[0] == 'R') //R
{
whichFan = RIGHT;
haveStart = TRUE;
}
}

// Now need the numbers - will just read three and throw them away if any don't qualify
// if we unsynchronize, it will fail valid digits and go back to waiting for command char
for (int i = 1; i < 4; i++) // read and label each byte.
{
while (Serial.available() == 0); // spin and wait for each character to arrive
bufferArray = Serial.read(); // store as they come in
}

// Check the numbers for validity
if (isDigit(bufferArray[1]) && isDigit(bufferArray[2]) && isDigit(bufferArray[3]))
// all are numbers - have a full cddd command
haveCommand = TRUE; // otherwise start over looking for a new and valid command
}
// Now turn that into a number and clip to 255 - rely on Game Dash for proper scaling
Speed = ((bufferArray[1]-48)*100) + ((bufferArray[2]-48)*10) + ((bufferArray[3]-48)*1);
//Serial.println(SpeedGameDash);
if (Speed > 255)
Speed = 255;
// Add logic for idle speed defined above by user
if (Speed < Idlespeed)
Speed = Idlespeed;
}
Click to expand...

Hi what do I have to change to invert the behavour of the fan's? I have No Limits 2 and when the car is veryslow forward the fan's blow full speed and when the car is going faster the fan's slow down.

thanks for any help

Hans

hansvdm · Dec 23, 2023

hansvdm said: ↑

Any suggestions how to reduce the speed of the fan's when the rollercoaster moves slowly. When the rollercoaster starts moving the output voltage is 11.58 volf (the powersupply and fan's are 12 volt)

during the ride the fan's slow down and speed up. It looks like the values are reversed. The slower the car is moving the fan's spin faster

@yobuddy
Click to expand...

Found it :- you must add Round 0

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Simulated Wind using MonsterMoto and ArduinoUno

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