Fire Tablet with Fully Kiosk Browser occasionally set to lowest dim level

SharpTools.io (web)
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The main settings I usually double check that I’ve set in Fully Kiosk Browser are:

  • Web Content Settings
    • Start URL: set to my full dashboard URL with ?kiosk=true appended
    • Enable Popups: on (optional)
    • Open URL Schemes in Other Apps: on (optional)
  • Web Auto Reload
    • All settings default at 0 / off - events are automatically pushed to your device and having the page auto refresh periodically can actually introduce more of a burden rather than help things
  • Advanced Web Settings
    • Enable JavaScript Interface: on (optional)
      • Adds a convenient ‘Set Start URL’ option within the … menu of the dashboard list
    • Keep Screen On while in Fullscreen Mode: off (optional)
      • If you are running a newer version of Fully Kiosk Browser, SharpTools will prompt you about this setting when you first try to use the fullscreen icon in a dashboard
    • Fake User Agent String (optional)
      • You can use this to emulate an iPad or other device to enable Google Login within Fully Kiosk Browser. Our recommendation is to use a linked email/password or phone login though.
  • Screensaver (optional)
    • I usually set mine to go to a dark screen after a minute or two.
      • Some people like to build a specific dashboard to use as their screensaver with just a clean image as a background and maybe a calendar/news/weather.
    • Screensaver Timer: 60 (or whatever value you want)
    • Screensaver Wallpaper URL: fully://color#000000cc
    • Screensaver Brightness: 1
  • Device Management
    • Keep Screen On: on
    • Screen Brightness
      • I just noticed this setting - I wonder if it would help with the dimming issue you experienced. Maybe give it a try? See the post below for more details.
    • Launch on Boot: on
  • Motion Detection (optional)
    • These settings pair up well with the screensaver so that your tablet will automatically wake when you walk in front of it. Though it should be noted that the camera will have a hard time seeing you in the dark, so you could use a motion sensor with your hub to wake the device if you prefer.
    • Enable Visual Motion Detection: on
    • Exit Screensaver on Motion: on
  • Remote Administration
    • Enable Remote Administration: on (optional)
      • If you want to be able to control Fully Kiosk Browser from your smart hub, there are device handlers for SmartThings and for Hubitat.

Make sure to not use the screen off features on a Fire Tablet unless you don’t mind having to manually unlock the screen (eg. do not use the ‘Motion: Turn Screen Off in Darkness’ or ‘Device Management: Screen Off Timer’ or ‘Power: Sleep / Force Screen Off’ type features). Most people use the Keep Screen On setting along with a black/dim screen as the screensaver to workaround this on Fire Tablets.

Edit:
User @Jeff_Fourman has also indicated that enabling the Stay Awake setting under the Fire tablet developer settings can help prevent issues with the brightness getting stuck at a low value.

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