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)