• Features
• ( 1 ) Small size                       

   ( 2 ) Cost  

   ( 3 ) and the serial IIC output format                 

Third, the product application         

( 1 ), handheld instrumentation      

( 2 ), robot navigation, positioning   

( 3 ), navigation system                       

( 4 ), marine autopilot                      

( 5 ), Yagi antenna positioning                        

( 6 ) , on-board GPS wire                   

( 7 ), model aircraft orientation                       

               
Five serial communication protocol

( 1 ), serial communication parameters 

     Baud rate: 9600 bps   parity: N   data bits: 8   Stop bits: 1 

( 2 ), module output format, each frame comprising . 8 bytes:

 ① .Byte0:   0x0D               ( ASCII code Enter)

 ② .Byte1:   0x0A               ( ASCII code line feed)

 ③ .Byte2:   0x30 ~ 0x33 angle of one hundred ( the ASCII ~ 0. 3 )

 ④ .Byte3:   0x30 ~ 0x39 angle of ten ( the ASCII ~ 0. 9 )

 ⑤ .Byte4:   0x30 ~ 0x39 angle bits ( the ASCII ~ 0. 9 )

 ⑥ .Byte5:   0x2E               ( ASCII code decimal)   

 ⑦ .Byte6:   0x30 ~ 0x39 angle of decimal places ( the ASCII ~ 0. 9 )

 ⑧ .Byte7:   0x00 ~ 0xFF checksum (low only 8bit )            

 Note: The checksum and Byte7 = ( Byte0 Byte1 + + ...... .Byte6 ) the results were only low 8bit   

 Example: a data <0x0A-0x0D-0x33-0x35-0x39-0x2E-0x36-0x1C> = 359.6 [deg.]

( 3 ), a command byte sent by the external controller to the module (hex)

    ① 0x31:. Conduct a measurement angle -------- return values of the reference output format

    ② .0xC0: calibration magnetic field begin --------- return values of the reference output format ( 000.0 degrees) ③ .0xC1: End calibration magnetic field -------------- return reference value hard iron compensation ' ② '        

④.0xA0-0XAA-0XA5-0XC5 :

Restore factory settings ---------------------- return values of the reference output format ( 000.0 °)

⑤. 0xA0-0XAA-0XA5-IIC_ADDR :

Module IIC address changes ------------- return values of the reference output format ( 000.0 °)

IIC address range of the reference " IIC protocol ( 3 )"

⑥ . 0x03 + magnetic high 8 Wei :

 Declination setting, set the north direction - return values of the reference output format ( 000.0 °)

⑦ . + 0x04 magnetic low . 8 bit :

 Declination setting, set the north direction - return values of the reference output format ( 000.0 °)

Example: sending 0XC0 time to the module, the module response . 1 frame

   <0x0D-0x0A-0x30-0x30-0x30-0x2E-0x30-0x05 > indicates success

   Led lights to enter the calibration

Example: sending 0x03 , 0x00 , 0x04 , 0x64 Between modules, the following response . 1 frames ( 4 times)