Changed power crc is raised to from 0x131 to 0x31 to be in line with the datasheet and the other crc code from Sensirion. It is 0x131 in the original code from Sensirion, however their docs and github now use a helper library which uses 0x31. 0x31 is Probably the correct polynomial.

Author: KeithTheEE

adafruit_sht31d.py

@@ -115,7 +115,7 @@ def _crc(data):
         for _ in range(8):
             if crc & 0x80:
                 crc <<= 1
-                crc ^= 0x131
+                crc ^= 0x31 # 
             else:
                 crc <<= 1
     return crc & 0xFF