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Problem with Asus T103HAF, intermittent writing

Posted: Mon 18. Nov 2019, 19:12
by luca92
Hello, I have Asus Transformers Mini T103 HAF that is equipped with active digitizer with pen, with N-trig technology. The writing is continuous if the hand does not touch the screen or if a handkerchief or anything insulating prevents direct contact between the hand and the screen, while it is intermittent if the hand touches the screen. In particular, the writing is intermittent if the hand touches the screen before the pen, while it is continuous if the pen touches the screen before the hand.

https://www.youtube.com/watch?v=WHMhcMCsVCo

Of course, touch the screen every time first with the tip of the pen and then with the hand is uncomfortable and not natural and then leads to the problem of intermittent writing. All Windows updates, Bios updates, Asus updates, Active “ignore touch input when I use the pen” have been made, calibration has been done and many other attempts. I verified that the problem is not in the contact between my hand and the pen, but between my hand and the tablet (the screen). So by placing a conductive thing on the screen like my hand, this problem occurs. The videos on this Youtube channel that describe this problem are a total of 4.

https://www.youtube.com/watch?v=DfEU3_ZEsUM

I also changed the pen, but the problem is not in the pen (the old pen is on the left of the PC).

I have read that my Asus T103HAF is on the compatibility list with Wacom Bamboo Ink Plus pens and Bamboo Ink so I wanted to know if my device had a palm rejection that is I can write with the hand resting and touching the screen. So I can't understand why the digitizer and the pen behave like this. And my question is, is palm rejection a hardware thing, a device, or just a software thing that automatically turns off the touchscreen when the pen approaches the screen? I do not understand. Can you help me?

Thanks, bye,

Luca

Re: Problem with Asus T103HAF, intermittent writing

Posted: Tue 19. Nov 2019, 08:12
by wacom5
Please confirm with Asus but your device seems to use Microsoft Pen Protocol, not N-Trig. If this is the case, then Palm Rejection is handled by the Operating System. Follow the steps here to turn ON palm rejection - https://www.windowscentral.com/how-customize-active-pen-settings-windows-ink-windows-10-anniversary-update
Check "Ignore touch input when I'm using my pen" ON.

Re: Problem with Asus T103HAF, intermittent writing

Posted: Tue 19. Nov 2019, 22:53
by luca92
Hi thanks for the reply.

As mentioned in the previous post I already checked that "Ignore touch input when I'm using my pen" is ON. I have been struggling with this problem for a long time but nobody helps me. Are you sure it's not N-Trig? I had seen on these links that even Asus Italia had confirmed that they were N-Trig:

1) http://www.tabletpc.it/it/2017/06/03/as ... e-t103haf/
2) http://www.tabletpc.it/it/2016/10/21/hp ... uovi-asus/

The article says: N-Trig (Microsoft Pen Protocol). Maybe they are one thing? Do you know any other way to solve the problem?

If it was Microsoft Pen Protocol the digitizer because microsoft does not release updates that solve the problem since many or all Asus devices have this problem?

I corrected the first post that maybe the video links describing the problem didn't work before.

Thank you, kind regards,

Luca.

Re: Problem with Asus T103HAF, intermittent writing

Posted: Wed 20. Nov 2019, 15:30
by wacom5
I am not sure. If Asus says it's N-Trig they know better, it's their product. The problem you show in the videos could be a hardware issue maybe?
I don't mean to be rude but I am not sure how we can help you further.
The Bamboo Ink should work and support palm rejection, I can tell you that much.

Re: Problem with Asus T103HAF, intermittent writing

Posted: Fri 22. Nov 2019, 22:14
by luca92
Hi, thank you for your reply.

I believe from what I've read that it's N-trig since even Microsoft Surface pens work well and that Microsoft bought N-trig.
I would like to understand if the palm rejection is something hardware or if it is something software. When the pen is close to the screen, the touchscreen is disabled. Isn't this the palm rejection? Is there any way to increase the distance it is activated? The problem is created if I lift the pen from the screen for a moment and the hand touches the screen before the pen, but if I touch the screen first with the pen and then with the hand everything works.

Thank you,

Luca.