Author Topic: NHD-7.0-HDMI-N-RSXM -RTV touchscreen calibration  (Read 670 times)

roman

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NHD-7.0-HDMI-N-RSXM -RTV touchscreen calibration
« on: May 16, 2018, 04:23:40 AM »
Hi !

I've just bought a NHD-7.0-HDMI-N-RSXM -RTV display. Looks good, brighness is really high !

But I have a problem with touchscreen. It says it does not need calibration as it is pre-calibrated. Looks like precalibration is lost or wrong. I cannot reach top of screen on left top corner, cannot reach right side on top right border and so on... similar on other corners. Cursor is

Is there a way to recalibrate ???

Thanks!!

Paul_B

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Re: NHD-7.0-HDMI-N-RSXM -RTV touchscreen calibration
« Reply #1 on: May 16, 2018, 07:59:22 AM »
Hi Roman,

The AR1100 (Resistive Touch Screen Controller IC) shows up like a USB mouse, it works on all operating systems as the computer doesn't even know its a touch screen, it just thinks its a mouse. You can adjust the AR1100 to consider itself a Touch Digitizer, supported by many but possibly not all computers.

You can also re-calibrate the touch screen. We do calibrate it with the 800x480 7" screens but we recommend re-calibrating it if you feel like its not precise enough for your tastes.

If you have a Raspberry Pi available you can re-calibrate the touch IC via USB using the following program:

https://github.com/tom-2015/rpi-AR1100

or

If you have a Windows computer you can re-calibrate the touch IC via USB using the following program:

http://www.microchip.com/wwwproducts/en/AR1100#documentation

roman

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Re: NHD-7.0-HDMI-N-RSXM -RTV touchscreen calibration
« Reply #2 on: May 16, 2018, 09:40:21 AM »
Hi Paul.

Screen is recalibrated and working fine!

Thanks a lot!

Regards.
Roman

Paul_B

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Re: NHD-7.0-HDMI-N-RSXM -RTV touchscreen calibration
« Reply #3 on: May 16, 2018, 10:35:56 AM »
No problem  ;)

 

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