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Published 20 hours ago • verified publisher icon goodtft

to anyone have a 3.5 inch display doesn't work

Open pieeatguy opened this issue 5 years ago • 3 comments

I find out that this "MHS-3.5inch RPi Display" is a cheap-knockoff from waveshare's 3.5inch RPi LCD (C)(https://www.waveshare.com/3.5inch-rpi-lcd-c.htm), from chip on the back to spi speed they cliamed.And waveshare's driver can work fine for this. but sadly, touch screen is still reversed :(

https://github.com/waveshare/LCD-show/issues

pieeatguy avatar Apr 15 '19 11:04 pieeatguy

Where is the problem? With calibration or what?

sudo nano /etc/X11/xorg.conf.d/99-calibration.conf

and change to:

Section "InputClass" Identifier "calibration" MatchProduct "ADS7846 Touchscreen" Option "Calibration" "277 3936 3880 268" Option "SwapAxes" "1" EndSection

or read the manual

wally666 avatar Apr 20 '19 18:04 wally666

there is another problem with this "cheap knock off". when i execute ./LCD-hdmi, it doesn't boot up in hdmi. you can see it for a little bit on the screen but it doesn't boot up in hdmi.

ramteen85 avatar Apr 26 '19 17:04 ramteen85

I fully agree, the device is a piece of garbage and bullshit. No matter how I reconfigure, the touchscreen is still swapped axis. Never works right.

xuancong84 avatar Dec 25 '23 04:12 xuancong84