Chalkboard Electronics 10" touchscreen

All the topics related to QLC+ on the Raspberry Pi
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mcallegari
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[Moving some posts in a new thread]
BigByte76 wrote:I recently purchased a 10" universal LCD with HDMI interface and capacitive multi-touch form chalkboard electronics and I'm having trouble getting single touch working which according to there website it should work by default. I have tried using the raspbian image to make sure it works straight out of the box which it does. Is there anything special that needs to be done to get usb touch screens to work with the qlc+ image?
Are the touch events captured on /dev/input/event ?
My image is a standard Raspbian, but stripped to the bone. Maybe this particular touchscreen requires some extra packages not installed in my image.
Did you check the touch screen events using XOrg on the standard Raspbian ?
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mcallegari
Posts: 4807
Joined: Sun Apr 12, 2015 9:09 am
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BigByte76 wrote:I tried to see if the events are captured but I get a bad command error, my guess is I'm not typing it in correctly. Also, where do you get the XOrg from and how to use it?

I did some more searching on the manufactures website of my touchscreen and says it needs the 'hid-multitouch'. I tried following there instructions linked bellow. Can you think of anything else?
http://www.chalk-elec.com/?p=2060
http://www.chalk-elec.com/?p=2028
Thanks,
Ok, let's make a step back, as it seems you don't know what I'm talking about.

First of all to make a touchscreen to work on the Raspberry Pi, you need some knowledge of the Linux operating system. For example what is a kernel driver, how to load/unload it, how to edit files/scripts, etc.

How to type the command to check the /dev/input events is written in the PDF guide I send with my image. Paragraph 7.4. Did you check it ?

The instructions you posted above are quite clear to me. Have you tried what they have written ?

Code: Select all

modprobe hid-multitouch
echo W X Y Z > /sys/module/hid_multitouch/drivers/hid\:hid-multitouch/new_id
Also, where do you get the XOrg from and how to use it?
X.Org is the server providing graphics (and with a window manager, a windowing system) on Linux since more than 20 years.
By default it is installed in a standard Raspbian image. Not in mine. I have written this too in the PDF guide. Chapter 1.

Now the question is: you have written "I have tried using the raspbian image to make sure it works straight out of the box which it does.", so how did you test it ? Booting a Raspbian image into X.Org and checking the cursor was moving when pressing the touchscreen ?

Can you type the command 'lsmod' on that image and paste the output here ?
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