Touchscreen and RS232

[de DJ Fabriek]

Hi,

I have bought a 12,1" touchscreen to connect to my raspberry pi2. I have also bought a usb tot RS232 cable for the touchscreen mode. It doesn't work for now. do i have to change something?

Is it also possible to change the resolution tot 800x600?

[mcallegari]

[Renamed the topic title]
Please provide a link to the product. Without knowing what kind of IO it has, it is difficult to help.

In any case, the touchscreen support on the RPi is not included by default. You need specific Linux skills to make it work, including (most likely) building some software.
I am still waiting for a display I ordered 3 months ago and when I will receive it (should be here in a few days), I will do a complete analysis of the software required and include it in the next RPi releases.

Have a look also at this:
viewtopic.php?f=7&t=1818

[de DJ Fabriek]

i use:
Touchscreen: Aegis 121TA http://bhd.lt/frontend/files/catalog/pr ... manual.pdf

USB to serial converter Brand: Goobay http://www.onlinekabelshop.nl/goobay-us ... oCgATw_wcB

Raspberry pi 2

[mcallegari]

OK, one thing at the time then.
First of all your monitor is VGA, so you're using a HDMI-to-VGA adapter (which you omit to tell us)

In this case, Google is your friend. I just found this:
http://www.mendrugox.net/2013/11/connec ... a-monitor/

You need to tweak the config.txt file that you can find in the fat32 partition (namely 'boot')
There you can choose also the VESA mode, so you can set 800x600@60Hz, as your monitor request.
I have one of those adapters and I can assure that without modifying that file you won't see anything on the display.

Please try those settings until you see the image on the screen, and then let me know.

The touchscreen is a different beast, and might be quite difficult to get to work.

[de DJ Fabriek]

Thanks for your request.

Excuse me, the hdmi to vga was already working. I used a cable from brand: Lenovo HDMI to VGA

[de DJ Fabriek]

The resolution is good now. the console is not good see attachments

so i put this in de config.txt
hdmi_safe=0
hdmi_mode=9
hdmi_group=2
hdmi_force_hotplug=1
disable_overscan=1
overscan_left=24
overscan_right=24
overscan_top=16
overscan_bottom=16
program_serial_random=1
config_hdmi_boost=4
hdmi_ignore_edid=0xa5000080
temp_limit=85
force_pwm_open=1

[de DJ Fabriek]

When i change back the original settings the screen is not the seem as before any change.

[de DJ Fabriek]

anyone how to change the right settings?

[mcallegari]

If you started QLC+ before changing the screen resolution, you need to remove the .conf file so QLC+ will adapt itself to the new fullscreen resolution.

http://www.qlcplus.org/docs/parameterstuning.html
Paragraphs 1 and 2

EDIT: please do not send me private emails asking for support. This forum is here for that purpose. Please be patient and wait for an answer here.

[de DJ Fabriek]

Oke thanks for your respond, sorry for the PM.

I am in the directory with Plus.conf
i type rm Plus.conf
i get No such file or directory

Doing something wrong?

[de DJ Fabriek]

Oki thanks i fix it just rm *.* and it works

[mcallegari]

Code: Select all

root@raspberry-pi:~/.config/qlcplus > ls -s
-rw-rw-rw- 1 root root 1957 apr 22 21:46 Fixture Definition Editor.conf
-rw-rw-rw- 1 root root 4451 giu  2 20:20 Q Light Controller Plus.conf

Code: Select all

root@raspberry-pi:~/.config/qlcplus > rm Q\ Light\ Controller\ Plus.conf

You're trying to remove the wrong file name.
I suggest to learn the basics of Linux, otherwise you will have an infinite number of problems on the RPi. (mostly because you won't find all the MSDOS command you've tried to give...)

[de DJ Fabriek]

oke tnx for your answer.. rm *.* works for me. But better only delete the file what has to be deleted.

Thanks for helping