This application can connect a PM2.5 detector of model SDC2501 via Bluetooth 4.0, to display the value of PM2.5 and draw dynamic curve.
SDC2501 is a device to measure PM2.5. PM2.5 values measured can be sent via Bluetooth.
this app can NOT work properly without the SDC2501 device.
A demo mode is added to the app to show the functionality of the app without the SDC2501 device.