The comment in the pressure method is incorrect. Looking at the datasheet, the math returns the value in pascals not mbars as stated. See * https://github.com/micropython-IMU/micropython-bmp180/blob/775d5292939c3c11ab950910026489a52594ce45/bmp180.py#L148 * https://www.waveshare.com/w/upload/f/fd/BST-BMP180-DS000-09.pdf