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Galaxy5
Posts: 25
Joined: Tue Dec 24, 2019 11:11 pm

Pi 4B Simultaneous FFC and HDMI display

Thu Jan 02, 2020 12:00 am

I heard that a RPi has issues with using a FFC display and a separate HDMI one (can't find source anymore). Has anyone tried this with a 4B? Does it work?

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HermannSW
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Location: Eberbach, Germany
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Re: Pi 4B Simultaneous FFC and HDMI display

Thu Jan 02, 2020 12:08 am

What problem? What FFC display?

This is Pi3B with 7" FFC display and HDMI0, with two camera previews, one on each display:
https://www.raspberrypi.org/forums/view ... 7#p1582997
Image
https://github.com/Hermann-SW/memrun
https://stamm-wilbrandt.de/2wheel_balancing_robot
https://stamm-wilbrandt.de/en#raspcatbot
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/en/Raspberry_camera.html

aBUGSworstnightmare
Posts: 4229
Joined: Tue Jun 30, 2015 1:35 pm

Re: Pi 4B Simultaneous FFC and HDMI display

Thu Jan 02, 2020 7:47 am

even a Pi Zero can drive two displays (DPI + HDMI) with latest OS.
Using the official 7in touch display + HDMi monitor is trivial on RPi4. On older models the GPU maximum supported resolution (with FKMS) is 2048x2048 pixels.

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Galaxy5
Posts: 25
Joined: Tue Dec 24, 2019 11:11 pm

Re: Pi 4B Simultaneous FFC and HDMI display

Fri Jan 03, 2020 11:56 pm

Ok, thanks! Just making sure.

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