LuxPar Meter

LuxPar Meter Free App

Rated 2.70/5 (10) —  Free Android application by jjbunn

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About LuxPar Meter

Estimates PAR light intensity by measuring the Lux intensity of Red, Green, Blue and White light, and applying a linear approximation to the values. Also estimates the temperature of the color in Kelvin.

The display shows a real time plot of the RGB and W Lux values as obtained from the built in light sensor on your phone.

Also shown is a) the estimated color temperature in Kelvin, and b) the estimated PAR value, for the measured RGBW levels.

Also shown is the color temperature name in the range "Candlelight" to "40K Metal Halide" according to the estimated Kelvin value.

Intended uses: estimating Lux and PAR intensities of LED, Metal Halide (MH), fluorescent, T5 and other lighting in freshwater, marine and reef aquariums.

The estimation is based on a calibration made with a MarsAqua 165W LED array, which used measurements of PAR at several locations under the light, and fitted them (used a least squares method) to RGBW levels obtained at the same locations.

Note: this app is designed specifically only for devices in the following list. On other devices, the readings will almost certainly not make sense.

List of devices known to work:
Samsung Galaxy S4
Samsung Galaxy Tab S2

A warning message will pop up if the CM3233 sensor data file is not present on the phone, and the app will then terminate.



If you already have a real PAR meter, the app can be improved in accuracy if you have time to send me the PAR reading you get, together with the LuxPar Meter app's RGBW readings at the same location - it would be much appreciated! Then I can incorporate your data in the multi-parameter fit, which will benefit other users.

How to Download / Install

Download and install LuxPar Meter version 1.2 on your Android device!
Downloaded 500+ times, content rating: Everyone
Android package: com.julian.apps.luxparmeter, download LuxPar Meter.apk

All Application Badges

Free
downl.
Android
4.0.3+
For everyone
Android app

App History & Updates

What's Changed
// v1.2 Removes Ads
// Checks for existence of CM3323 sensor file before running
// Re-layout of RGBW and PAR values
// Gives mnemonic for color temperature on scale "Candlelight" to "40K Metal Halide" etc.
// and shows RGB color in a square on-screen swatch
More downloads  LuxPar Meter reached 500 - 1 000 downloads
Version update LuxPar Meter was updated to version 1.2
More downloads  LuxPar Meter reached 100 - 500 downloads

What are users saying about LuxPar Meter

O70%
by O####:

Please add support for my phone! I gave you 5 stars hoping it will get you money in the long run. I have a Moto Z Play. I get this message when I try to open the app: "The RGBW Sensor in this device does not update to /sys/devices/virtual/sensors/light_sensor/raw_data. LuxPar Meter cannot work." I would love to test out the app for you on this phone if you want a debug tester. Post an email address and I'll contact you.

S70%
by S####:

It seems to work. I can quickly see the estimated lux, also the concentration of the red, green or blue color spectrum, which helps a lot. I cant test it too much though, sadly. One thing that confuses me is the LUX value. It does not seem to show the total lux value like the rgb sensor app does. Tried the app on my Galaxy tab A6

S70%
by S####:

This app shows great promise and it is unique in estimating PAR. I have been trying to find an app like this ever since I bought a phone that has an RGB sensor (TMD3725). I am a long-time user of this developer's excellent Audio Tool app. Keep up the good work and watch the app rating rise. The current 2.8 figure belies its potential.

Y70%
by Y####:

Doesn't work with my phone

S70%
by S####:

Works very well on Galaxy s8. Only par meter I have found.

G70%
by G####:

Does not work, too bad was really looking forward to using it for many projects.

U70%
by U####:

No change still does not work, white screen with adds at the bottom

Z70%
by Z####:

Does not work on Note5


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Rating Distribution

RATING
2.75
10 users

5

4

3

2

1