查看“Dashboard”的源代码

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==Objective==

The course will show you how to achieve a dashboard through Processing to display the inductive magnetic field change of Microduino. 

==Equipment==
*'''[[Microduino-Core]]'''
*'''[[Microduino-FT232R]]'''
*'''[[Microduino-10DOF]]'''

*Other Hardware Equipment 
**A USB cable 

==Schematic==

Just use the HMC5883L magnetic field strength sensor of Microduino-10DOF.


==Program==

https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Processing/MicroduinoDashboard

https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Processing/ProcessingDashboard

==Debugging==

Step 1：Build the hardware environment according to the schematic, just like:  
[[File:processingDashboardConnectionDiagram.jpg|600px|center|thumb]]

Download the library function of HMC5883L: 
https://github.com/manifestinteractive/arduino/tree/master/Libraries/HMC5883L

Step 2: Here is the code：

The code of the two ends(Processing and Microduino)

Microduino:

Initialize HMC5883L in “setup()”  

Calculate the angle of the magnetic induction 

//Output() used to output the calculated angle to the serial port 
  // Output the data down the serial port.
  void Output(int RoundDegreeInt)
  {
    //Serial.println();
    Serial.println(RoundDegreeInt);
    delay(150);
  }


Processing:

//Get the data of the first serial port. 
  myPort = new Serial(this, Serial.list()[0], 9600);

//The code below in drawCube() is used to acquire the serial data

  while (myPort.available() > 0) {
    myString = myPort.readStringUntil(lf);
    if (myString != null) {
  //print(myString);  // Prints String
    angle=float(myString);  // Converts and prints float
    println(angle);
    }
  }

Function Reference：

//Draw the center point of the dashboard 
buildpoint()

//Draw the dashboard and the pointer scale  
builddashboard()

//Receive the serial data and draw the center point 
drawCube()

//Draw the whole dashboard 
drawCube1()


Step 3：Download the code and get it compiled successfully. 

Step 4：Use a magnet to change the magnetic field to see if the pointer changes after the system goes well. 

==Result==

A little compass will be displayed on the scree, which goes along with the change of the magnetic field, just like: 
[[File:processingDashboardResult.jpg|600px|center|thumb]]


==Video==