Illuminance vs. distance with SensorTag

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My telephone has only accelerometer (with g), so I have to use a SensorTag. An additional advantage is that it is more simple to attach the SensorTag (CC2650 of Texas Instruments) to a bluetooth mouse (see photo). A difficulty, that I could not solve in the phyphox program, is a difference between the time intervals of the SensorTag and the mouse. Their data were saved in different files (zipped together) and treated by a Python code. A rather small light diode lamp was used and the result is not bad.