<![CDATA[MMM-AmbientBrightnessDetection]]>Brightness Detection and Auto-Brightness

Please see a module that samples images from a webcam to calculate the ambient brightness of the light in the room, sends a matching notification with the light level in percentage, while also (optionally) sends a notification to the MMM-RemoteControl to adjust the brightness of the screen accordingly (using that module’s brightness range of 10-200).

The module samples one image every predefined interval (defaults to 1 minute), and currently supports (and tested over) USB Webcams, while I plan to add support for the PI camera module, which I do not currently have handy, but soon.

Hope you’d like it. It was born because the mirror was too bright for me at night, or too dim in the daylight, and I wanted to create auto-brightness.

I’d appreciate your tests and comments!

https://github.com/eric-h-st/MMM-AmbientBrightnessDetection

Thank you!

]]>https://forum.magicmirror.builders/topic/13346/mmm-ambientbrightnessdetectionRSS for NodeTue, 11 Aug 2026 14:30:08 GMTSat, 25 Jul 2020 07:07:31 GMT60<![CDATA[Reply to MMM-AmbientBrightnessDetection on Fri, 31 Jul 2020 05:56:58 GMT]]>UPDATE: Now supporting the PI camera, as well as configuring which camera to use, if not the default

]]>https://forum.magicmirror.builders/post/79409https://forum.magicmirror.builders/post/79409Fri, 31 Jul 2020 05:56:58 GMT<![CDATA[Reply to MMM-AmbientBrightnessDetection on Mon, 27 Jul 2020 15:45:18 GMT]]>UPDATE:
Now supporting displaying and animating brightness changes at the top of the screen.
screenshot.png

]]>https://forum.magicmirror.builders/post/79222https://forum.magicmirror.builders/post/79222Mon, 27 Jul 2020 15:45:18 GMT<![CDATA[Reply to MMM-AmbientBrightnessDetection on Sat, 25 Jul 2020 15:01:15 GMT]]>@Eric_H said in MMM-AmbientBrightnessDetection:

Next to be added:

  • Configurable factor to be added to the brightness level sent to MMM-RemoteControl, to make the brightness range more visible in extreme light/dark cases.

  • CEC support to change the actual brightness of the monitor, if supported.

  • PI camera module support

** Now also supported: **

  • Configurable factor to be added to the brightness level sent to MMM-RemoteControl, to make the brightness range more visible in extreme light/dark cases.
]]>https://forum.magicmirror.builders/post/79140https://forum.magicmirror.builders/post/79140Sat, 25 Jul 2020 15:01:15 GMT<![CDATA[Reply to MMM-AmbientBrightnessDetection on Sat, 25 Jul 2020 13:57:19 GMT]]>Next to be added:

  • Configurable factor to be added to the brightness level sent to MMM-RemoteControl, to make the brightness range more visible in extreme light/dark cases.

  • CEC support to change the actual brightness of the monitor, if supported.

  • PI camera module support

]]>https://forum.magicmirror.builders/post/79136https://forum.magicmirror.builders/post/79136Sat, 25 Jul 2020 13:57:19 GMT<![CDATA[Reply to MMM-AmbientBrightnessDetection on Sat, 25 Jul 2020 13:52:45 GMT]]>Thank you @sdetweil .

  • I control the brightness by sending a notification to the MMM-RemoteControl module (code already written and working, no reason to re-invent), found here.
  • Since the brightness is set programmatic ally via css in that module, I’m not sure how various monitors would react, but I tested on three here, including the one behind the mirror, and they seem to work quite the same.
  • I’m taking a single shot once every configurable interval, with a default of 60 seconds.

Hope I answered all of your questions.

Eric

]]>https://forum.magicmirror.builders/post/79135https://forum.magicmirror.builders/post/79135Sat, 25 Jul 2020 13:52:45 GMT<![CDATA[Reply to MMM-AmbientBrightnessDetection on Sat, 25 Jul 2020 13:46:21 GMT]]>@Eric_H cool. some questions

how do u control the brightness? do all monitors/TV’s respond the same way?

I have some software already connected to my webcam, are u just taking screen shots? how many images do u need at one time?

]]>https://forum.magicmirror.builders/post/79133https://forum.magicmirror.builders/post/79133Sat, 25 Jul 2020 13:46:21 GMT