What is the unit for the "uvSensorData" in the UV calibration data file (.toml)?
I'd like to have some control of the UV light intensity over time (as the LCD degrades), as well the UV light intensity variation over the LCD area. I think I have read that the SL1 should give an intensity around 0.1 mW/cm^2 . I have used the UV calibrator with the 15 sensors (picture below), and downloaded the .toml file ("Settings > Systems Logs > Save to USB drive", using firmware 1.5.0) which contains the "calibration results", see file listing below.
What is the unit for the "uvSensorData" in this file? (The values are in the range 105-130.) Can I convert the values to [mW/cm^2]? Can I calibrate the calibrator? How is the LCD calibrated; is the intensity of the brightest LCD areas reduced to match the less bright areas? Or is the power of some LEDs also adjusted? Is the variation between the 15 sensors, as recorded in the .toml file, the variation AFTER calibration of the LCD?
Below is the content of the file "uvcalib_data.2021-04-20_16-48-33.toml":
uvSensorType = 0
uvSensorData = [ 109.0, 130.0, 110.0, 127.0, 105.0, 127.0, 126.0, 105.0, 118.0, 112.0, 124.0, 113.0, 124.0, 114.0, 112.0,]
uvTemperature = 30.2
uvDateTime = "20.04.2021 16:48:20"
uvMean = 117.3
uvStdDev = 8.300000000000001
uvMinValue = 105
uvMaxValue = 130
uvPercDiff = [ -7.0, 10.9, -6.2, 8.300000000000001, -10.5, 8.300000000000001, 7.5, -10.5, 0.6, -4.5, 5.7, -3.6, 5.7, -2.8, -4.5,]
uvFoundPwm = 234
uvOsVersion = "1.5.0"
uvMcBoardRev = "6c"
uvLedCounter = [ 718747, 335378,]
RE: What is the unit for the "uvSensorData" in the UV calibration data file (.toml)?
I wouldn't expect an answer from Prusa here, but the good news is that the answer should be in (or at least clearer) in the firmware. The bad news is that I've tried looking at the firmware a few times and have yet to wrap my head around how the repo works (though I haven't spent too much time on it).