After getting the sensors to provide data to my UNO, I'm finding significant differences between the two sensors, which are on the same breadboard, adjacent to each other (see pic).
Here are my outputs:
Sensor 0 => Temperature: 32.30 C | Pressure: 983.82 mbar
Sensor 1 => Temperature: 29.50 C | Pressure: 1487.07 mbar
Sensor 0 => Temperature: 32.20 C | Pressure: 983.73 mbar
Sensor 1 => Temperature: 29.80 C | Pressure: 1487.35 mbar
Sensor 0 => Temperature: 32.60 C | Pressure: 983.70 mbar
...
It should be noted that these two BMP180s were purchased from different suppliers.
So, it would stand to reason that the calibration procedure (init_SENSOR?) isn't doing what I would have expected...
At the start of the sketch, the following data is output:
Sensor 0 calibration data:
AC1 = 6778
AC2 = -1054
AC3 = -14511
AC4 = 33480
AC5 = 25169
AC6 = 19135
B1 = 6515
B2 = 36
MB = -32768
MC = -11786
MD = 2717
Sensor 1 calibration data:
AC1 = 8797
AC2 = -1183
AC3 = -14951
AC4 = 33097
AC5 = 23410
AC6 = 22534
B1 = 5498
B2 = 63
MB = -32768
MC = -11075
MD = 2432
I can see that all but one of the values between the 2 sensors are different, which may explain my results.
Is there something I can do to better match these two BMP180s to each other?
