Tutorial Driving DIY cluster gauges with GameDash

You will get better timings and smoothness without using libraries, due to all use a blocking function, more noticeable as you add more gauges or function to your code.

Okay, I'll make a stress test with more motors
as soon as possible...
I have to finish my new DIY wheel first

Hi,RacingMat,I get a X27 589 stepper motor ,and I used a test program to run it ,but it was not run in your code ,I have tried to input the values from 0-255,but it just rotate a little,what style of input value is correct ? and could you picture your gamedash setting? I dont know the rules of gamedash,and I cant find a detailed introductions of the gamedash, Thank you very much!

I found a function in the code is "map(Rpm, 0, 255, 0, TotalSteps)",but the I can't find the "map()" was define ,so is this in some library file? maybe it's the problem .

Hi,
i'm not mad and really can't help you with the problem. But for the map function take a look here http://arduino.cc/en/pmwiki.php?n=Reference/Map
It's a function from arduino ide to map values from one range to another.

@welen123 :
what kind of "test program" do you use?

here a screenshot I did

Thank you for your help ,I get the map function means.

Code:

//----------------------------------------------------------------------
// https://github.com/clearwater/SwitecX25
//
// This is an example of using the SwitchX25 library.
// It zero's the motor, sets the position to mid-range
// and waits for serial input to indicate new motor positions.
//
// Open the serial monitor and try entering values
// between 0 and 944.
//
// Note that the maximum speed of the motor will be determined
// by how frequently you call update().  If you put a big slow
// serial.println() call in the loop below, the motor will move
// very slowly!
//----------------------------------------------------------------------

#include <SwitecX25.h>

// standard X25.168 range 315 degrees at 1/3 degree steps
#define STEPS (315*3)

// For motors connected to pins 3,4,5,6
SwitecX25 motor1(STEPS,4,5,6,7);

void setup(void)
{
  // run the motor against the stops
  motor1.zero();
  // start moving towards the center of the range
  motor1.setPosition(STEPS/2);
 
  Serial.begin(9600);
  Serial.print("Enter a step position from 0 through ");
  Serial.print(STEPS-1);
  Serial.println(".");
}

void loop(void)
{
  static int nextPos = 0;
  // the motor only moves when you call update
  motor1.update();
 
  if (Serial.available()) {
    char c = Serial.read();
    if (c==10 || c==13) {
      motor1.setPosition(nextPos);
      nextPos = 0;
    } else if (c>='0' && c<='9') {
      nextPos = 10*nextPos + (c-'0');
    }
  }
}

the code is a example in the in the SwitecX25_master file in the libraries . the motor will rotate to the Target Location when I input a number between 0-945.

here is a video ,maybe someone can help me with it.

the example code you posted cannot work with gamedash!
Did you test the code I posted?

Did you setup the same baud speed for Arduino and windows Comport and GameDash?

Yes ,I tried the code you posted,the video showing the situation by your code ,maybe its the wrong rules of the gamedash with live for speed.how can I make the output value to a" byte"type. because your code define the Rpm to a byte.
I have find the problem,its the rules setting.and I change the range of the byte to 0-150 ,and it works now.

Hi, I received the quad-driver for switec from Aliexpress
2 pieces = 6€ + SOIP adapters

http://www.aliexpress.com/item/Car-...-chip-general-vid6606-um12017/1573038281.html


http://guy.carpenter.id.au/gaugette/resources/vid/2009111391612_VID6606 manual 060927.pdf

hi RacingMat.i follow your topic.this is a good project.i want to make a dashboard too,i use 5 wire stepper motor with uln2003 driver ( motor model is 28byj48) this motor is slower than switec x25, but i use my motor just for test.
i used your arduino code,its very good,my stepper worked.but this code is general.we should define some axis for speedometer and tachometer and etc.
i dont know anything about coding.how can i find a complete code for dashboard.
thank you.

Thank you!

you can wait for me to implement the 5 motors code: it's on my todo list (among other items...)
or you can learn to code, it's very interesting!

thank you for reply.i will wait for your code.

@r-driver : please post some pictures meanwhile or a video of your system! it will motivate me

Hello,
since i finally got the Dash output with Rbr working ( Big Thanks to Soraz) i can continue my work with the steppers. I was able to get it working with two motors.
At the momeent everything is connectet with loose wires, so i was not able to film the real dashboard ingame too.

@RacingMat you need motivation?
i made a little video of my 2 motors. At the end they are going crazy because of i crash. I didn't look at the screen.

If i set the output manually in Gamedash it is very accurate.

Edit: I made a Video with rbr screen:


At the moment i run them at 5v directly from Arduino Io. For me and Rbr its fast enough.
ANd sorry for the bad driving. It's with keyboard

@tombo : thanks for the sharing! it's motivating

RBR gauge is not round so it's difficult too check the correct matching... but looks good indeed!

@tombo : it looks really good! congrats

thanks for sharing the Photoshop link: i'll paste it in the first post