====== BME280(i2c) ======
pythonプログラム
  wget https://raw.githubusercontent.com/SWITCHSCIENCE/BME280/master/Python27/bme280_sample.py

raspberrpyとの接続pin
^raspi ^BME280(i2c)^
|1:3.3v|VCC|
|3:SDA|SDA|
|5:SCL|SCL|
|9:GND|GND|
| |ADD|