tested with hardware

Author: BlitzCityDIY

adafruit_qmc5883p.py

@@ -131,11 +131,11 @@ def __init__(self, i2c_bus: busio.I2C, address: int = _DEFAULT_ADDR) -> None:
  raise RuntimeError("Failed to find QMC5883P chip")
 
  # Initialize with default settings
- self.mode = MODE_CONTINUOUS
- self.data_rate = ODR_10HZ
- self.oversample_ratio = OSR_8
- self.downsample_ratio = DSR_1
- self.range = RANGE_2G
+ self.mode = MODE_NORMAL
+ self.data_rate = ODR_50HZ
+ self.oversample_ratio = OSR_4
+ self.downsample_ratio = DSR_2
+ self.range = RANGE_8G
  self.setreset_mode = SETRESET_ON
 
  @property
@@ -160,9 +160,9 @@ def magnetic(self) -> Tuple[float, float, float]:
  lsb_per_gauss = _LSB_PER_GAUSS[self._range]
 
  # Convert to Gauss then to microteslas (1 Gauss = 100 uT)
- x = (raw_x / lsb_per_gauss) * 100.0
- y = (raw_y / lsb_per_gauss) * 100.0
- z = (raw_z / lsb_per_gauss) * 100.0
+ x = raw_x / lsb_per_gauss
+ y = raw_y / lsb_per_gauss
+ z = raw_z / lsb_per_gauss
 
  return (x, y, z)
 

examples/qmc5883p_simpletest.py

@@ -26,7 +26,6 @@
 while True:
  mag_x, mag_y, mag_z = sensor.magnetic
 
- print(f"X:{mag_x:10.2f}, Y:{mag_y:10.2f}, Z:{mag_z:10.2f} uT")
- print("")
+ print(f"X:{mag_x:2.3f}, Y:{mag_y:2.3f}, Z:{mag_z:2.3f} G")
 
  time.sleep(1)