raspberry pi with touch screen in case

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raspberry pi with touch screen in case

Postby Mhwlng » Sun Mar 30, 2014 6:50 pm

I found This 320x240 display and matching case.

Image

Image

I used a standard raspbian (2014-01-07-wheezy-raspbian.img) image and followed the instructions here to get the display and touch screen working.

I removed the composite video plug from the raspberry pi
and instead added a mini-din pug (like ps/2 keyboard) for 1-wire temperature sensors.

I use the USB port on the left to provide power to the raspberry pi, instead of the micro-usb port on the right.
The micro-usb plug is not very secure in this case.
And the power plug is now on the same side as the ethernet plug.

On a standard raspbian image, I installed in addition:
-mosquitto (mqtt broker)
-1-wire (w1-gpio, w1-therm) modules (or OWFS, in case a DS2482 i2c -> 1wire interface like This is used)
-minimal kiosk browser That I modified and recompiled to handle the 320x240 resolution.
-node.js (handles mqtt, 1wire & web functionality)

/tmp, /var/tmp and /var/log are moved to ramdisk to reduce the chance of sd card corruption when unplugging the power.

x-windows screen blanking is disabled because it doesn't switch off the LCD backlight.
Instead node.js monitors the touch screen and switches off the screen(+backlight) after 15 minutes of inactivity.

node.js implements a webserver that provides (specially formatted) web pages for display on the LCD display (320x240).
It also serves other ‘regular’ web pages for use on a PC/tablet/phone.
Last edited by Mhwlng on Mon Mar 31, 2014 10:39 am, edited 2 times in total.
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Re: raspberry pi with touch screen in case

Postby Bwired » Sun Mar 30, 2014 7:35 pm

Very nice project!

this kickstarter is just started also
color touch screen Rasp
https://www.kickstarter.com/projects/21 ... =discovery
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Re: raspberry pi with touch screen in case

Postby Mhwlng » Sun Mar 30, 2014 7:55 pm

The problem is that there is no case to go with that kickstarter project..

The above case is the only one that I found.

4d systems do have some bezels : http://www.4dsystems.com.au/product/Bezel/ for their raspberry pi LCD displays.
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Re: raspberry pi with touch screen in case

Postby Bwired » Sun Mar 30, 2014 8:50 pm

Agree, thats always the problem, those bezels look also good btw
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Re: raspberry pi with touch screen in case

Postby Mhwlng » Sun Mar 30, 2014 9:49 pm

Here is a good list of available LCD displays...
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