Sharp GP2Y1010 dust particle sensor

Pinout of a dust particle sensor

Source: http://www.theorycircuit.com/wp-content/uploads/2018/03/dust-sensor-arduino-interface.png

Reference:

https://github.com/PaulZC/GP2Y1010AU0F_Dust_Sensor

http://hazardweatherstation.blogspot.com/2012/06/optical-dust-sensor.html

https://www.instructables.com/id/How-to-Interface-With-Optical-Dust-Sensor/

AHA... need to multiply the Dustdensity by 1000

Bluetooth v2 for Arduino

BluetoothV2 to Arduino

source: https://forum.arduino.cc/index.php?topic=24619.0

Source: https://fccid.io/S7APARANIESD110/User-Manual/Users-Manual-693211