This Wiki page contains information for the “LCD-T70-800×480-HDMI” from Modtronix. It is a 7“ LCD Display with touchscreen for the Raspberry Pi.
This display(and most other similar 7” displays) requires some configuration/drivers to be installed on the RPi for it to function properly.
When using with a Raspberry Pi with the standard Raspberry Pi NOOBS OS, no drivers are required! Both the Display and Touch Screen will work without installing any drivers! Only a small modification to the “config.txt” file is required. See the “Configuring Standard NOOBS OS” section below for details.
Connection is very simply:
This guide assumes you have NOOBS or Raspbian installed on your Rapsberry Pi. They can be downloaded here.
When you connect this LCD to a Raspberry Pi with the standard Raspberry Pi NOOBS OS, you will notice only the left side of the LCD display is used. The right side is unused and black. To fix this, the “config.txt” file located in the ”/boot“ folder of the SD card has to be modified. Do the following:
On your Raspberry Pi, start the Terminal. See Remote access without monitor section below for details. This can be done using different methods. I normally just plug a Ethernet cable into my RPi, and connect to it using WinSCP(on Windows). Then start PuTTY(Terminal) session.
Make a copy of your original “config.txt” file. Lets call the copy “config_bak.txt”:
sudo cp /boot/config.txt /boot/config_bak.txt
Open the “config.txt” file(we will use the nano editor):
sudo nano /boot/config.txt
Now find the line that starts with:
# uncomment to force a specific HDMI mode
Ensure the following lines are present below it. Uncomment and/or add lines as required (right mouse button is paste).
# uncomment to force a specific HDMI mode hdmi_group=2 hdmi_mode=1 hdmi_mode=87 hdmi_cvt=800 480 60 6 0 0 0
Save the file by pressing “Control” and “X” key. A windows will ask if you want to save modified file. Press 'Y' key, followed by “enter” to save file.
Reboot your Raspberry Pi:
On reboot, the whole LCD display should be used, and the touch screen should work.
The following pages contain useful information how to get this LCD display to work:
We have found that when using this LCD with a Raspberry Pi, and some “non official” power supplies, that the touch screen often locks up. When using it with the official Raspberry Pi 3 power supply (2.5A or 3A PSU), it works perfectly. When a lock up occurs, it can be fixed by:
For details, see www.raspberrypi.org/documentation/remote-access/ To connect to your RPi without a monitor, you basically need to do the following:
SSH is disabled by default on Raspbian. To enable it, connect HDMI monitor, keyboard and mouse to your RPi. Do one of the following:
On main screen, click on Raspberry icon in top, left corner of screen. Select “Preferences” –> “Raspberry Pi Configuration”. On the “Interfaces” tab, enable SSH.
Start “Terminal” app, and enter following command:
Navigate to 'Interfacing Options'(or 'Advanced options') and then enable SSH. Reboot.
The following pages have useful information that might help: