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+--- Forum: Pinebook Pro Hardware and Accessories (https://forum.pine64.org/forumdisplay.php?fid=116)
+--- Thread: Touchscreen LCD replacement (/showthread.php?tid=7827)
Touchscreen LCD replacement - Jcarlos - 08-10-2019
I wonder if we would be able to replace the included panel with a touch screen one?
Thanks
RE: Touchscreen LCD replacement - Arwen - 08-10-2019
(08-10-2019, 07:55 AM)Jcarlos Wrote: I wonder if we would be able to replace the included panel with a touch screen one?
Thanks
Interesting question.
One thing that is needed for a new input device, is the hardware input port. We'd have to look at the schematics of the Pinebook Pro and see what was available. Without looking, the only un-used internal I/O that I know of, are the PCIe lanes, 4 of them. (I don't know if touch panels use separate I/O from the display I/O.)
A nice thing about open designs is that you actually do get to see the schematics and block diagrams. Plus we can request design changes for version 2 of the system board. Like bringing out un-used I/O ports to board connectors. (Instead of having to solder to board traces or chip pins.) This is one of my personal projects, get to know Pinebook Pro's internals.
RE: Touchscreen LCD replacement - Luke - 08-11-2019
Well there is no TP port on the PCB, so I cannot see how you'd do that.
RE: Touchscreen LCD replacement - chithanh - 08-11-2019
It is possible to transfer touch data via DisplayPort AUX.
Though I don't know if rk3399 can handle this well.
RE: Touchscreen LCD replacement - Thra11 - 08-12-2019
Some touchscreens have a separate eDP connector for the display and USB cable for the touch (can come in different forms, such as FPC, etc.), so if you were desperate to attach a touchscreen, you could connect such a touchscreen in place of one of the external USB ports (I'm assuming there aren't any spare/unused USB connections exposed anywhere inside).
Problems with this approach:
- * Routing the touch USB cable out of the screen into the base.
- * One less USB port, unless you can find space to squeeze a hub in.
RE: Touchscreen LCD replacement - Dreamwalker - 08-12-2019
You could use a nano hub prob can squeeze it inside and reroute an external port.
https://www.tindie.com/products/mux/nanohub-tiny-usb-hub-for-hacking-projects/