HMC5883L Magnetometer chip Possibilities.

[andybarrett1]

Hi Richard.

Still reading between 100 to 900 on degrees.

Close to the River Mersey in Liverpool here fireworks are all ready noisy

Thank you for help ....

[richard]

looks like you are converting azimuth to degrees twice
once here

 'Calculate Azimuth

  GOSUB GetAzimuth

  'Calculated Heading in Degrees

   brads = azimuth     'get angle
  'degr = brads */ 361 'convert to degrees
   degr = brads*360/256      and this is still wrong needs to be  degr = brads */ 360 

  
   Lcdout $fe, $C0, "Degrees =",SDEC degr

and once here

x = readx >>4  
Y = readY >>4
Z = readZ >>4

  'DEBUG       "SCALED X,Y", CR
  'DEBUG       "X = ",11, SDEC x, CR
  'DEBUG       "Y = ",11, SDEC y, CR

   'azimuth = x ATN -y
  azimuth = ( x ATN -y) */ 360 

surly once is enough

azimuth = x ATN -y