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#!/usr/bin/env python3
import serial, time
# SDS011 air quality sensor
ser = serial.Serial('/dev/ttyUSB0')
while True:
data = []
for index in range(0,10):
# read sensor
datum = ser.read()
data.append(datum)
# extract bits 2 and 3 for PM2.5 and divide by 10 to get micrograms per metre^3
pmTwoFive = int.from_bytes(b''.join(data[2:4]), byteorder='little') /10
# extract bits 4 and 5 for PM10 and divide by 10 to get micrograms per metre^3
pmTen = int.from_bytes(b''.join(data[4:6]), byteorder='little') /10
print(pmTwoFive)
print(pmTen)
time.sleep(10)
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