TSL2591 daylight LUX

[Systembolaget]

For "dusk to dawn" daylight measurements for balcony/terrace plants, is there a preferred GAIN and INTEGRATION TIME setting to obtain realistic values? I currently use TSL2591_GAIN_LOW and TSL2591_INTEGRATIONTIME_500MS and on an overcast day at around 10am obtain around 1800lx, which seems sort of in line with the values provided here https://en.wikipedia.org/wiki/Daylight but is that reliable?

Thanks!

[adafruit_support_bill]

In general for a sensor like that I aim for the lowest gain setting and integration time that will give me a reading in the middle 50% of the scale. Lower gain means less noise and mid-scale tends to avoid any non-linearity that might exist at the extremes.

If your application requires speed, you may need to increase gain to allow shorter integration times.

[Systembolaget]

Cheers, speed is not an issue, so that is why I chose TSL2591_INTEGRATIONTIME_500MS (highest integration time) and TSL2591_GAIN_LOW (lowest gain). I guess that should deliver fairly reliable results.