Hi, So I think I have figured out the problem, the calibration values were not being treated as signed (the ones that should be). So could someone verify these results for me please? (The Raw Calibration Values are the same as above). Temperature/Pressure/Humidity Register Returned Value 0xF7 0x55 0xF8 0x33 0xF9 0x80 0xFA 0x81 0xFB 0x7F 0xFC 0xB0 0xFD 0x79 0xFE 0x13 +24.44°C 996.21hPa 54.17%rH Temperature/Pressure/Humidity Register Returned Value 0xF7 0x54 0xF8 0x5F 0xF9 0x50 0xFA 0x80 0xFB 0xCD 0xFC 0xB0 0xFD 0x7F 0xFE 0x17 +23.55°C 1000.40hPa 62.47%rH Thanks!
... View more
Thanks for the link. I had seen (and used) the excel form already. What I needed was the Raw (Hex) data which is returned from the BME280, unfortunatley the sheet does not have this. The issue I have is that the BME280 returns a high pressure reading, the form also shows this so it is not my calculations. Is the sensor faulty? The temperature is correct, and humidity I don't have anything to check against. The Raw values are: Calibration: 0x6C, 0x6E, 0x77, 0x66, 0x32, 0x00, 0xA8, 0x92, 0x27, 0xD5, 0xD0, 0x0B, 0x6F, 0x18, 0xCA, 0xFF, 0xF9, 0xFF, 0xAC, 0x26, 0x0A, 0xD8, 0xBD, 0x10, 0x4B, 0x65, 0x01, 0x00, 0x14, 0x0B, 0x00, 0x1E Temp/Press?Humidity: 0x55, 0x33, 0x80, 0x81, 0x7F, 0xB0, 0x79, 0x13 Calculations are: +24.44°C 1148.38hPa 54.17%rH Settings are: 0xF5 = 0b10101000 ' Config Setting (1000ms Standby, IIR Filter @ 4) 0xF2 = 0b00000010 ' Humidity Setting (x2 Oversampling) 0xF4 = 0b01001011 ' Temp/Pres Settings (x2 Oversampling, Normal Mode) Regards,
... View more