https://www.cnx-software.com/2017/10/16/esp32-micropython-tutorials/
http://wiki.seeedstudio.com/Grove-Sunlight_Sensor/
https://github.com/THP-JOE/Python_SI1145/blob/master/SI1145/SI1145.py
http://docs.micropython.org/en/latest/esp8266/reference/index.html
https://github.com/adafruit/Adafruit_Python_GPIO/blob/master/Adafruit_GPIO/I2C.py#L145
https://hackernoon.com/get-on-the-good-foot-with-micropython-on-the-esp32-decdd32c4720?gi=937ce8fea7dc