IR Overlay - pulling hair out !

emailuser

Hi everyone … i have built my MM frame and am using a old 32"LCD TV , sitting on top i have a 32" IR Touch overlay … but the overlay responds to touch in landscape mode - i have a pi4 and have rotated the TV screen using DISPLAY=:0 xrandr --output HDMI-1 --rotate left , but despite looking at loads of forums / websites nothing seems to work to make the touch overlay rotate as well … my overlay is Bus 001 Device 003: ID 1ff7:0013 CVT Electronics.Co.,Ltd CVTouch Screen (HID)

Any help greatly appreciated !!!

sdetweil

@emailuser well, here is a concise description of how to do it with a pi screen and overlay…
https://www.circuitbasics.com/raspberry-pi-touchscreen-calibration-screen-rotation/
two different configs…

emailuser

@emailuser said in IR Overlay - pulling hair out !:

DISPLAY=:0 xrandr --output HDMI-1 --rotate left

Thanks Sam … but those instructions are for a touchscreen – i have an IR USB overlay which enables touch on the screen ,
as an example on the instruction
Enter sudo nano /etc/modules at the command prompt to edit the file. Go to the line for the ads7846_device parameters and move the cursor to the right to find it: - i dont have that in that file

fordi

I’m having the same issues, the touch overlay works perfectly in landscape mode but my mirror is designed to be in portrait mode.
If i find a solution i will post on here. I have contacted manufacturers to see if they can help also.

Snille

Hi, I had the same issue when I built my mirror… Here is how I solved it. Made a .sh script with all the information: :)

#!/bin/bash

# Before I just tested with the xinput command directly in the autostart file, but that did not work. So now instead I just created a script called xin.sh.
# nano ~/xin.sh
# Then added
# DISPLAY=:0.0 xinput --set-prop "Multi touch Multi touch overlay device" "Coordinate Transformation Matrix" 0 1 0 -1 0 1 0 0 1
# There should actually be 3 spaces between “Multi touch” and “Multi touch overlay device”. For some reason the board removes the extra spaces here.
#
# You can actually find the “name” of the device with this command form a console: DISPLAY=:0.0 xinput list
# Shows something like this:
#
# Virtual core pointer id=2 [master pointer (3)]
#   Virtual core XTEST pointer id=4 [slave pointer (2)]
#   Multi touch Multi touch overlay device id=6 [slave pointer (2)]
# Virtual core keyboard id=3 [master keyboard (2)]
# Virtual core XTEST keyboard id=5 [slave keyboard (3)]
#
# Depending on what you have connected to your RPi. 🙂
# 
# So, after creating the xin.sh I added that to the autostart file for LXDE:
# Like this:
# nano ~/.config/lxsession/LXDE-pi/autostart
# Added at the end of the file.
# @/home/pi/xin.sh
# Restarted and it works.
#
DISPLAY=:0.0 xinput --set-prop "Multi touch   Multi touch overlay device" "Coordinate Transformation Matrix" 0 1 0 -1 0 1 0 0 1

Maybe you guys can use it some how? :)