Posts by kpahuitsing

  • Kemper Player getting power over USB A port?

    to complete G-String's message:
    note 1: besides USB storage G-String already mentioned; it's totally OK to use USB-A for connecting a USB powered (foot)pedal like the Midi captain .. as long as the connected device isn't drawing too much power.
    note 2: of course all PROFILER models have over-current protection on their USB-A port : so nothing will really break if you connect a device which draws too much power : the PROFILER will cut the provided current.
    note 3: the USB-A port of the PROFILER is not meant to receive power : this is against the USB specification as G String stated already

    the KPP in the image is showing erratic behaviour : maybe somehow there has been a longterm over-voltage applied to it's USB-A port breaking the internal protection circuitry ?
    Also the connected USB device (which is not visible in the image) is showing erratic behaviour: it is not supposed to source any power to a USB-A connector : maybe that device is broken too?

    quemper:
    "Would love to have a single power/data cable" -> this is already the case when you simply connect a regular USB A <-> B cable to the MIDI device (MIDI captain?) . The KPP will happily provide power to that USB device, and you'll only need the d.c. powersupply connected to the KPP's dc connector.

  • USB Hub for multiple USB-MIDI devices

    Although the PROFILER supports USB-HUBs, it does not support hosting multiple USB-MIDI devices simultaneously at this moment.

    several options here:

    • use an external MIDI merger (on TRS/DIN side) -> connect Chocolate + backing-track via MIDI merger to USB interface to Player
    • use a USB interface with multiple inputs and a built-in internal merger -> connect Chocolate + backing-track via built-in merger of that interface to USB Player
    • maybe use the 'Chocolate-plus' ? (the specs of that unit show a USB-HOST mode: in theory -> connect Player to Chocolate's host, and connect backing-track via existing USB MIDI cable to Player's host)
    • use a stand-alone USB host which can host multiple USB devices *and* accept TRS/DIN MIDI -> connect Player + Chocolate as USB device to that host, and your backing-track player via TRS/DIN

  • Unplugged my KPA when it was switched on, now it's dead...

    of course the KPA will *not* be destroyed from (unexpected) power-outage.

    but please do not tamper with the inside of the Profiler. This is something for support. That battery is there to keep the real-time clock running and nothing more: even a dead or removed battery will not cause the Profiler to fail booting.

    simple / trivial things to double-check:

    - did you actually plug the cable thoroughly into the KPA again? (we've had several cases where the mains cable just wasn't pressed thoroughly enough into the KPA)

    - did you try with another mains-cable?

    in the end: best is to contact support

  • Kemper Player becomes unresponsive when connecting midi pedal over USB

    yes: you're correct: the casual user really should find another controller in that case, because that controller(/implementation) is broken.

    The KPP doesn't have to fix misbehaving devices : in an ideal world the KPP would be robust against all garbage it is being thrown at.. and we do our best to get it as robust as possible. But in this case: a device declares as USB MIDI device, but actually is not capable of receiving (some) MIDI data? How should the KPP know, and cope with that?

    Anyway: we will NOT implement an ActiveSense OFF option. A connected (USB)MIDI device should be capable of _receiving_ that message (and it can simply ignore it : just as you correctly did with your custom device)

    (by the way: in regular (DIN) MIDI, active-sensing hasn't been any problem since the 80's .. ;)

    oh: and also by the way: you could declare your custom controller to be a MIDI-OUT device only (so remove the USB descriptors for MIDI-IN) .. that way the KPP wouldn't need to send any messages which would be discarded anyway ;)

  • UI to MIDI sync performance mit USB MIDI ?

    (Google translate:)

    Hinweis: Die Verbindung von 2 PROFILERs miteinander kann ohne ein USB-<->DIN-MIDI-Kabel erfolgen. Du kannst eine direkte Verbindung mit einem USB-A-B-Kabel herstellen (= dasselbe Kabel, das man zum Anschließen eines PROFILERs an einen Computer verwenden würden).

    In diesem Fall benötigst Du also keinen USB-A-zu-MIDI-Kabel :)

  • Updating Profiler - Flashing Red but Nothing Happening

    - unpacking 'incorrectly' : for example virusscanner destroying the kaos.bin file after extraction

    - copying to 'root' ... sometimes this is unclear to customers where to actually copy to

    - 6 flashing LEDs : reboot/ contact support

    did you observe that a firmware update actually took place at all? (there should be a yellow progressbar during update, and updating takes a while)

    in your specific case: maybe the system doesn't recognize the update as being 'different' and skips the updating process? You could try to use another version first : for example first try to update with a release version, and then use a beta version (or the other way around)

  • Updating Profiler - Flashing Red but Nothing Happening

    this isn't difficult at all for *a lot* of customers who do not have any problems with it.

    .. but unfortunately you are experiencing non-typical problems at this moment : maybe it has something to do with your specific unit (hardware issue?), maybe it has something to do with the way you're downloading the data, maybe it has something to do with the way you're unpacking the data, maybe it has something to do with the way you write to the USB stick, maybe it has someth... etc. etc.

    contact support and they will work this out together with you.

  • Updating Profiler - Flashing Red but Nothing Happening

    4x LED red = something went wrong during firmware update, possible causes:

    • broken/bad USB stick
    • broken/bad download of ZIP file
    • broken/bad unzip of the ZIP file data (kaos.bin extraction)
    • broken/bad write to USB stick by host OS

    you could try to re-download the update, re-unZIP, and use another USB stick (basically re-do the update procedure with a fresh download and a fresh stick)

  • Profiler Player - Backup on USB Stick

    Quote from Bistro79

    by the way: that image shows that you're using a 128G stick, not a 256G stick.

    meanwhile the Sandisk Ultra Eco 256G version has arrived over here for testing (https://www.amazon.nl/dp/B0B8X7DX8D)

    1. the 256G version works right out of the box : no problems here -> so the PROFILER can handle at least this 'modern' big stick without problems , and there is not per se a structural problem with big sticks
    2. formatting this 256G stick like Bistro79 did, simply with the default settings of Windows will result in a unsupported format stick (exFAT)
    3. when inserted into the PROFILER this way the PROFILER will ask to confirm formatting (there is a pop-up dialog which asks 'Are you sure? - USB stick needs to be formatted' --> so this is as intended, because the PROFILER can't recognize exFAT
    4. when pressing 'yes' to format it takes aaaages to complete, and there isn't much UI feedback to the user : about 6.5 minutes (so this could be improved on PROFILER's side; it looks like the PROFILER is hung-up; after the formatting is done the only indication that it succeeded is that the tap blinkin commences.. the user has to press 'exit' before continuing)
    5. after the stick has successfully been formatted by the PROFILER everything works fine : the stick has it's full capacity of 256G
    6. If you really want to format the stick on a Windows machine for use with the PROFILER you'll be needing a 3th party tool (tested for example with 'guiformat.exe by Ridgecrop Consultants' ) -> be sure to format as FAT32LBA and the PROFILER will accept the stick.

    conclusion:

    a) at least this Sandisk Ultra Ecu 256G works as it should: no problems over here - another stick which does work fine!

    b) do not bother to format the stick yourself: just use a USB stick right out of the box