https://wiki.dfrobot.com/PM2.5_laser_dust_sensor_SKU_SEN0177
Connect SET and SLEEP pins to Raspberry Pi GPIO pin 26 and ground
Using USB UART for Raspberry Pi for 5v UART logic (Does on board 3.3v UART work? Did not seem to)
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Python/Raspberry Pi example with DFRobot SEN0177 PM2.5 laser dust sensor