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Disable screensaver for Raspberry Pi

The 7" Raspberry display in the kitchen is nice, but unfortunately by default the installation comes with a screensaver enabled. After a while, the display goes dark. No one wants to stare at a blank display, and touch the screen in order to see crucial information.

 

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Remove Trashcan Icon from Raspberry Pi Desktop

Our home automation got a nice 7" Raspberry display in the kitchen, showing the most relevant information (like temperature, weather, washing machine, dryer ect) on a dedicated screen. Quite handy, especially the temperature, and the one-click stop to the weather forecast.

While installing the Pi and setting everything up, I stumbled over the Icons which LXDE by default shows on the desktop. Not necessary, I want them removed. All I want on the desktop is the browser icon which directly goes to the HABpanel.

The reason is simple: if the Pi starts up, but the browser for unknown reasons doesn't come up, I don't want anyone to be confused by additional icons on the desktop. After all, usually the LXDE desktop is not seen by default.
 

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Raspberry Pi: take a screenshot from a display with no keyboard and mouse

The Raspberry Pi in the kitchen runs relatively stable, but recently the browser (which is showing the openHAB HABpanel) popped up a warning in the upper right corner. That's annoying, because this area in HABpanel shows the outside temperature.

Before investigating what's going on, I had to figure out a way to get a screenshot of the display - without running into the kitchen with my mobile phone. And without attaching a keyboard all the time (to press the "Print" button).

 

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Hide the mouse cursor on a Raspberry Pi

The openHAB HABpanel we have in the kitchen runs on a Raspberry Pi and uses a touchscreen display. The browser starts in fullscreen mode, and shows a specific HABpanel screen for this display. That's all nice, but by default the mouse cursor is in the way. Let's get rid of it.

 

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Occasional HABpanel disconnect from the openHAB server

The new display showing HABpanel works quite nice. But occasionally the fullscreen browser will lose the network connection. As far as I can see, it's not a Wi-Fi problem of the Raspberry Pi, but still annoying: in the morning the browser shows a small red warning that the connection to the openHAB server is lost, time is still correct, but temperature and the status of other devices is outdated. To fix that, I have to leave fullscreen mode, hit reload - and then there is no keyboard for going into fullscreen mode again (that's using the F11 key).

 

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Automatically start a fullscreen browser on a Raspberry Pi - show openHAB HABpanel

The Raspberry Pi with the touch display for the home automation system is coming along nicely. One problem to solve: how to display the openHAB HABpanel, and which browser to use?

Firefox and Chrome don't run on Raspbian. However "Chromium" (the open source part of the Chrome browser) is. That's a good start. But how to start the browser automatically, and in full screen?

 

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