I installed the dash software locally on my synology NAS, mounted a nice android tablet to the wall (it was formyly used for imperihome). made a chrome desktop app link to the diskstation so it runs full screen as an app The tablet has constant power, set screensaver to 30 seconds and disabled the option to keep screen on when it is charged.
Now after 30 seconds the screen dims and then turns off when i walk towards the tablet the screen turns on again.
To turn it automatically on again i used 2 (paid) apps:
- first (paid) app is motion detector: this apps lets your front (or back) camera of your tablet act like a motion camera, when it detects motion you can set what to do. I set it to send a system notification. The motion can be configured, sensitive, camera width etc
- the second (paid) app is tasker. Here i made a profile that responds on the notification send by the motion detector app and made a task to turn screen ON.
It works like a charm, when you walk to the tablet it nicely turns on and after 30 seconds it turns off again.
