Midas Displays
Issue: 2
Date: 21/08/2019
6
3. Other configurations
Apart from setting up the hardware, you may need to do some software configurations for better
compatibility. Typically displays with an RGB, LVDS or HDMI interface require specific timings for correctly
displaying an image. These timings are usually configured and stored in an EDID file (usually found in desktop
monitors). Our MDIB-11 boards are already programmed (flashed) with EDID settings, but sometimes the EDID
may not be recognised by the device connected to the display, in which case additional settings will be
required. Fortunately Raspberry Pi offers an easy solution to configure these settings, and that is through a
configuration file called “config.txt” and we will discuss this below.
3.1. Raspberry Pi config file
The config.txt file is stored in the /boot directory on the Micro SD card, where the Raspbian OS (operating
system) is stored. This file contains various lines of code/instructions for various configurations, including
HDMI timings. Here you can manually customize the timings for the display that you want to use or you can
simply use our pre-customized config.txt file (see figure 3).
F
IGURE
3
-
E
XAMPLE OF A
C
ONFIG
F
ILE
