Published September 22, 2015 © GPL3+

Facing South House Finder

You can find South

BeginnerFull instructions provided679

Things used in this project

Hardware components

WIZnet WIZwiki-W7500

Seeed studio Grove 3-Axis Digital Compass

Seeed studio Base Shield V2

Hand tools and fabrication machines

mbed Web Compiler

Story

I will introduce a Facing South House Finder :)You can make Facing South House Finder if you follow this contents.It is very easy and simple way.Let's start!

Step 1: Hardware

1 / 7

We need a several meterials1. WIZwiki-W7500 board

2. Seeed studio Base Shield

3. Seeed studio Grove 3 Axis compass sensor

4. Some LEDs

5. Some Jumper Cables

6. USB mini B type cable

7. Grove connect cable

They are all... for this project~!

Step 2: Schematic

1 / 2

Your connect meterials view to figures.

D2~D13 connect to LEDs

compass sensor connect to I2C port in Base shied

that's all!!

Step 3: Software

I prepared mbed develpment environment by the following site.https://developer.mbed.org/You not installed Tool, Just use Internet.To get start with mbed.org go on side https://developer.mbed.org/ and create free account. If you are ready open compiler and create first project

Source code is https://developer.mbed.org/users/justinkim/code/FacingSouthHouseFinder_WIZwiki-W7500/

You import this program and compile using mbed internet compiler.You can get bin file.

Step 4: TEST Result

You can see the test result by the video.When you point to the south GreenLED is On.and... When you point to Left than South Red LED is Onand... When you point to Right than South Yellow LED is On

Thank you for your attention.

Code

FacingSouthHouseFinder_WIZwiki-W7500

/**
 ******************************************************************************
 * @project  mbed project 
 * @author  Justin Kim
 * @version V1.0.0
 * @date    00-AUG-2015
 * @brief   Main program body
*******************************************************************************
**/
/* Includes ------------------------------------------------------------------*/
#include "mbed.h"
#include "HMC5883L.h"
 
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
DigitalOut  myled_R1(PC_1);
DigitalOut  myled_R2(PC_0);
DigitalOut  myled_R3(PA_2);
DigitalOut  myled_R4(PA_1);
DigitalOut  myled_G1(PA_0);
DigitalOut  myled_G2(PC_6);
DigitalOut  myled_G3(PC_7);
DigitalOut  myled_G4(PC_4);
DigitalOut  myled_Y1(PA_5);
DigitalOut  myled_Y2(PA_8);
DigitalOut  myled_Y3(PA_7);
DigitalOut  myled_Y4(PA_6);
 
Serial pc(USBTX,USBRX);    // default baud rate: 9600
HMC5883L hmc5883l;   
 
double Heading;
float DataBuf[3] ={0};
 
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/**
   * @brief     Main Function
   * @param  None
   * @retval    None
   */
int main(void)
{
    hmc5883l.init();
    
    while(1) 
    {        
        Heading = hmc5883l.getHeading();
        
        pc.printf(" _______________\r\n");
        pc.printf("| Heading: %.1f   \r\n", Heading);
        pc.printf("|_______________\r\n\r\n");
        
        hmc5883l.readMagData(DataBuf);
        
        pc.printf(" _______________\r\n");
        pc.printf("| MagXout: %.1f   \r\n", DataBuf[0]);
        pc.printf("| MagYout: %.1f   \r\n", DataBuf[1]);
        pc.printf("| MagZout: %.1f   \r\n", DataBuf[2]);
        pc.printf("|_______________\r\n\r\n");
        
        if(225>Heading && Heading>135)
        {
            myled_R1 = 0;
            myled_R2 = 0;
            myled_R3 = 0;
            myled_R4 = 0;
            myled_G1 = 1;
            myled_G2 = 1;
            myled_G3 = 1;
            myled_G4 = 1;
            myled_Y1 = 0;
            myled_Y2 = 0;
            myled_Y3 = 0;
            myled_Y4 = 0;        
        }
        
        else if(135>Heading && Heading>0)
        {
            myled_R1 = 1;
            myled_R2 = 1;
            myled_R3 = 1;
            myled_R4 = 1;
            myled_G1 = 0;
            myled_G2 = 0;
            myled_G3 = 0;
            myled_G4 = 0;
            myled_Y1 = 0;
            myled_Y2 = 0;
            myled_Y3 = 0;
            myled_Y4 = 0;     
        }
        else if(360>Heading && Heading>225)
        {
            myled_R1 = 0;
            myled_R2 = 0;
            myled_R3 = 0;
            myled_R4 = 0;
            myled_G1 = 0;
            myled_G2 = 0;
            myled_G3 = 0;
            myled_G4 = 0;
            myled_Y1 = 1;
            myled_Y2 = 1;
            myled_Y3 = 1;
            myled_Y4 = 1;     
        }
    }
}

Credits

Justin Kim

6 projects • 7 followers