Peter Gamma (Physiologist & Director) Meditation Research Institute Switzerland (MRIS)

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Fedora supports touch with the Raspberry Pi 4, but only with the official 7 inch Raspberry Pi touch display which is connected over a flat cable

Posted bypg@petergamma.org 2 Comments on Fedora supports touch with the Raspberry Pi 4, but only with the official 7 inch Raspberry Pi touch display which is connected over a flat cable

Last Updated on April 20, 2023 by pg@petergamma.org

  • This is according to the Fedora documentation
  • The case is similar with LattePanda: Windows 10 and Lubuntu support touch on the LattePanda, but only on the official LattePandea 7 inch touch display
  • LattePanda says the 7 inch LattePanda touch display is not compatible with Raspberry Pi displays
  • But it worth to test this by ourselves.
  • For instance, the Garmin Fenix 6 can only calculate the respiration rate from Garmin chest straps, accoding to the Garmin documentation.
  • but this is wrong: we paired a Polar OH1 to a Garmin Fenix 6 and respiration rate calculation works, altough it is only accurate at 12 breath per minute, also with the Garmin chest strap
  • We already made some tests. We bought a second hand LattePanda V1 with 7 inch display from Digitec Switzerland.
  • The display did work at the beginning with the LattePanda.
  • Then we had not display for a Raspberry Pi 3, and connected the LattePanda display to the Raspberry Pi 3
  • It it possible to connect the display, but we did not have any signal
  • Then, we did not have a signal from the LattePanda either
  • The cable connector is difficult, it can be connected both way round
  • We had also problems with a 7 inch HDMI display which was connected to a Raspberry Pi 3 and a Raspberry Pi zero w2
  • With both devices, we had a black screen if connected over HDMI
  • but when we connected the 7 inch HDMI screen to a Windows 10 PC, it worked proberly
  • Further study of the literature, tests and studies regarding this topic are necessary. With Raspberry Pi OS, it should be possible to connect a HDMI touch screen to a device over HDMI and over usb, and the touch signal runs over usb. Hopefully more OS images support this feature. According to ETA PRIME, if we remember right 98 % of the OS which run on Raspberry Pi’s support touch, but not for instance RetroPy.

In Switzerland there is a saying “probiere gaat über studiere”, which means testing is better than studying. This applies also for the connectors described here. And sharing your experience about these things is better than keep silent about it. So please share your experience with it in the comments below.