LCD

Initial Design

The initial design for the screen was to use 3.2” TFT LCD Module Display + Touch Panel + PCB Adapter and was cheap at £10. This screen would require addition circuitry so that it can communicate with the raspberry pi. The following circuit was implemented:

 

  

After the circuit was implemented it was tested on the screen with the raspberry pi. To implement the LCD screen instruction were followed that were supplied by Notro.

The link to these instruction can be found here: https://github.com/notro/fbtft

Problems Encountered

 After the instructions were followed the screen would not turn on. Testing was carried out but to no avail. The decision was made that a new LCD Screen would need be used as time was running out and we couldn’t waste it on debugging our circuitry.

New Design

The screen chosen was Texy’s 2.8”TFT + Touch Shield Board. This can be found here: http://www.raspberrypi.org/forums/viewtopic.php?f=93&t=53144

This screen required no additional circuitry and could be connected straight to the raspberry pi’s 26 GPIO pins.

This screen was much easier to set up and the instructions were clear to follow.

You can find the instructions here: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=45&t=48967

After following these instructions we could successfully use this LCD Screen and its touchscreen capabilities.