<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">You could try watching the dmesg for any disconnection of usb<div><br></div><div>$ sudo dmesg -w</div><div><br></div><div>Then touch the screen and see if there's anything weird. </div><div><br></div><div>You could also watch for x events. </div><div><br></div><div>$ xev</div><div><br></div><div><br></div><div><br><br><div dir="ltr">Huan Truong<div>tnhh.net</div></div><div dir="ltr"><br>On Jun 6, 2022, at 5:38 PM, Ron Craig via TriEmbed <triembed@triembed.org> wrote:<br><br></div><div dir="ltr"><div dir="ltr">
<div>Hi, gang.</div><div><br></div><div>I bought<a href="https://www.amazon.com/dp/B07L6WT77H?psc=1&ref=ppx_yo2ov_dt_b_product_details" target="_blank"> this display</a>
from Amazon. It states it works with the Pi Zero, but I cannot get
Touch to work on that. Touch works fine on a Pi 4B, but not the Zero.</div><div>Any hints?</div><div><br></div><div>
<div dir="ltr"> I have made my own cables where needed, but Touchscreen
still does not work. I am including my wiring setup below. Am I missing something? The arrow on the OS screen
moves the <b>first </b>time I touch the screen, but will not move after that. I think it is a software issue? Are there drivers needed for the Zero?</div><div dir="ltr"><blockquote><blockquote><div><b><font size="2" face="courier new, courier, monaco, monospace, sans-serif"><font color="#5b8828">pi@hamclock</font>:<font color="#440062">~ $</font> cat /etc/os-release<br clear="none">PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"<br clear="none">NAME="Raspbian GNU/Linux"<br clear="none">VERSION_ID="10"<br clear="none">VERSION="10 (buster)"<br clear="none">VERSION_CODENAME=buster<br clear="none">ID=raspbian<br clear="none">ID_LIKE=debian<br clear="none">HOME_URL="<a href="http://www.raspbian.org/" target="_blank">http://www.raspbian.org/</a>"<br clear="none">SUPPORT_URL="<a href="http://www.raspbian.org/RaspbianForums" target="_blank">http://www.raspbian.org/RaspbianForums</a>"<br clear="none">BUG_REPORT_URL="<a href="http://www.raspbian.org/RaspbianBugs" target="_blank">http://www.raspbian.org/RaspbianBugs</a>"</font></b></div><div><font size="2"><b><font face="courier new, courier, monaco, monospace, sans-serif"><font color="#5b8828">pi@hamclock</font>:<font color="#440062">~ $</font> uname -a<br clear="none">Linux hamclock 5.10.103+ #1529 Tue Mar 8 12:19:18 GMT 2022 armv6l GNU/Linux</font></b></font></div></blockquote></blockquote><div dir="ltr"><div><br clear="none"></div></div></div><div dir="ltr">In the picture:</div><div dir="ltr">1: Power Block (5V 3.5A) to MICRO USB power connector on the Zero W. No under voltage warnings. All looks good.</div><div dir="ltr">2: DIY 4-wire cable from JST to MICRO USB connector on the Zero W. Substitute for the 5V+Touch connector on the side.</div><div dir="ltr">3: Supplied FPC to MINI HDMI connector on the Zero. Reaches fine once I moved the Zero to another location (was too short if the Zero was installed where suggested).</div><div dir="ltr"><br></div><div dir="ltr"><img alt="Zero Connections small.png" width="230" height="151" src="cid:ii_l43fj3wd0"><br></div><div dir="ltr">I've put Kapton tape on the back of the Zero W to prevent any electrical shorts with the unused mounting post.</div><div dir="ltr"><br clear="none"></div></div>
<div><div dir="ltr"><div><div dir="ltr">On bootup to 32-bit Raspberry OS,
the desktop appears properly and the picture looks great. I can touch the
screen EXACTLY ONE TIME, and the arrow cursor will move to where I
touched the screen. It never moves after that.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">The
application I use does not require a keyboard if I can use a
touchscreen. Without touch, I need a bluetooth mouse, which I would
rather not use. There are less expensive non-touch screens I think I
could use if touch will not work. <br clear="none"></div><div dir="ltr"><br clear="none"></div><div dir="ltr">Any
help is greatly appreciated. I've already printed a nice case and
swinging mounting arm for this display, so I would love to keep it and
use it if I can get touch to work.</div><div dir="ltr"><br clear="none"></div><div>Note that I've also tried power through the 5V IN connector, but the behavior is exactly the same.</div></div></div>
</div><div><br></div><div>Generally, are there any gotchas with Touch and the Zero or Raspberry OS in general I could try?</div><div><br></div><div>Best,<font color="#888888"><br></font></div><font color="#888888"><div>-- <br></div><div>Ron Craig KO4RON</div><div>
<font color="#888888">J'ai bonne espérance!</font>
</div></font>
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