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  1. hns

    Librem 5 phone by Purism

    Yes, all such initiatives should cooperate: OpenMoko, GTA04, Tinkerphones, Neo900, FairPhone, PinePhone, Purism, PiPhone, TyFone, ShiftPhone, ZeroPhone and how they were/are all called... Unfortunately this never happens because it needs individualist who invest a lot of time and energy and are...
  2. hns

    Just a quick heads up

    Recently I have checked one of the early Pyra prototypes built ca. 3 or 4 years ago and initially everything was fine. No problems with audio. Like it was years ago where we assumed no problems with audio. Until I tried to run the vibra motor while music was playing. This was too much for this...
  3. hns

    Just a quick heads up

    The clock line is not a straight wire from OMAP5 to TWL6040 but has a stub to the board-to-board connector because originally it was intended to have a different audio circuit on the main board, also connected to this clock. But that is not used and the wire to the board-to-board connector ends...
  4. hns

    Just a quick heads up

    OMAP+TWL6040 use a protocol called McPDM but it is similar to SPI and I2S. Unfortunately we have not found any registers for inverting the clock out pin... If you are interested in the details, it is twl6040 erratum #8 "PDM Downlink Data Corrupted" in TI document SWCZ0007D from 2011 (it seems to...
  5. hns

    Just a quick heads up

    Short answer: we do not know. ED is modifying some boards and then we will see if the cure for his test unit works there as well. Sure. We know that it depends on IC process variations since different units are not equally hit by the problem. If you can sponsor a PCB redesign and a new...
  6. hns

    Just a quick heads up

    It is even in the pico seconds range. There is a very small time slot where the clock is not allowed to change or otherwise the data bits going over a serial line are sampled wrongly disturbing the digital audio going to the amplifier and speaker. It may sound strange that removing an unused...
  7. hns

    Are you interested in a new Pandora LCD cable?

    Thanks for asking! We were not yet able to test durability... But I had an idea. This needs a hell-machine... It is not yet completely finished, but already looks like this: It will wobble the display lid of a Pandora. It should be able to handle roughly 80000 open-close-cycles per day so in...
  8. hns

    Letux-OS

    here: https://shop.goldelico.com/wiki.php?page=Product&product=3030 I have not tried a 400GB (µ)SD card on the Pandora but other OMAP devices are running well with it. So I think size of the SD card doesn't matter. AFAIK, the TV cable alone isn't enough.
  9. hns

    Letux-OS

    Very unlikely.
  10. hns

    Letux-OS

    Ok, that is already some good sign. Do you have a serial console cable to check what the kernel is doing and optionally get a console?
  11. hns

    Letux-OS

    Just give it a try. It may (or not) be that the bug has been fixed unintentionally. Then please report what you find out.
  12. hns

    Installing debian onto pyra

    Basically you can apt-get remove what you do not want to keep (i.e. the Desktop) and apt-get install something else. It is also possible to debootstrap your own system and install on a fresh SD card. Well, then you are on your own to configure this (either through vim before booting or through...
  13. hns

    It reminds me of the Pandora!

    My favourite example is the Hewlett Packard pocket calculator HP12C. It is built and available since 1981. Their longest selling product: https://en.wikipedia.org/wiki/HP-12C And my HP15C (bought ca. 1985) is still alive and in use every now and then... For example, I did some calculations for...
  14. hns

    Production Pyra photos/videos/thoughts thread

    Yes, you are right (or left?)... It is ca. 5 years old description (done before some keyboard discussion threads did appear here :) But it is a Wiki page and open for updates.
  15. hns

    Production Pyra photos/videos/thoughts thread

    Depends on what kernel and user-space tools are doing with the key events. Here is a description of how the keyboard is mapped to hardware: https://www.pyra-handheld.com/wiki/index.php?title=File:PyraKeymatAndButtonsFunctions.png 1599037387 Well, no. i2cdetect will report "UU" because there is...
  16. hns

    Production Pyra photos/videos/thoughts thread

    Well, it is not really a hardware bug but a limitation. It was not designed to work this way, so it doesn't work... IMHO it is only a weak limitation for full configurability. There is also a similar limitation for the left and right LEDs which are connected to the USB host overload detector...
  17. hns

    On the upgradability of the Pyra

    Well, only one lane of CSI is exposed on the extra B2B connector (which is not used/installed on the Pyra mainboard). There was a technical restriction why we were not able to add two or four lane CSI. Maybe a pinmux conflict with something else. AFAIR, the ov5640 module is able to be operated...
  18. hns

    Update PinePhone to have Keayboard and Gamepad

    Just for the historians: https://shop.goldelico.com/wiki.php?page=GTA04%3AKeyboard So 8 years ago it was too early for a really open Linux phone :)
  19. hns

    On the upgradability of the Pyra

    Yes :) It was discussed as the "Pyra Phone" (GTA15) and even reached some early prototype stage. But there was not enough demand from the Community. And to be honest self-critical, it would be as expensive and bulky as the Librem 5 and only slightly more open and powerful than the PinePhone.
  20. hns

    It's software this time!

    The key is that "Dark Matter" is (was) "detected" by a difference of the rotation rate of spiral galaxies to the visible mass distribution https://en.wikipedia.org/wiki/Dark_matter . This is sort of "optical detection" and is the original reason we know of it. From that, astronomers conclude...
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