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Viewing 11 posts - 1 through 11 (of 11 total)
  • 23. November 2017 at 17:14 #32592

    Gotcha! Will do next time.

    21. November 2017 at 19:11 #32577

    Hi Heiner,

    sorry about this, what is the mod’s forum? Do I find it here https://www.max2play.com/en/forums/


    17. April 2017 at 11:47 #28284

    So we have setup a JustBoom DAC with a rotary encoder on GPIO 23,24.
    Followed the steps in our guide till the end of section 2 to configure the OS.

    How To Configure JustBoom With Max2Play

    and the extra steps from M2P

    and all works fine for us.

    If you have a keyboard/mouse and a monitor or can access via SSH, you could run the alsamixer to verify that indeed the volume slider works with the rotary encoder.

    I hope this helps.

    • This reply was modified 6 years, 12 months ago by JustBoom.
    13. April 2017 at 23:02 #28241

    Hi Pete,

    You need to use the BCM notation so it is GPIO 23,24 which are pins 16,18

    I’ll try to replicate your installation as soon as I can, maybe someone from M2P can shed some light in the meantime?

    6. März 2017 at 12:17 #27461

    To solve this problem you need to „Disable Build-In-Audio on RPI3“ under „Raspberry Settings“

    • This reply was modified 7 years, 1 month ago by JustBoom.
    31. Januar 2017 at 18:30 #26527

    Hi Tim,

    no problem at all. If that’s the direction you are going to maybe you want to also read my considerations here https://www.max2play.com/en/forums/topic/stromversorgung-7-touch-display/ although with the Amp you are in a better position with the pins on the P2 connector.

    Have fun!

    30. Januar 2017 at 14:02 #26407

    Hi Uwe,

    If you are not planning to use the Amp on top of the DAC HAT you can simply install a 20×2 header in P2. That replicates all the pins from the Raspberry Pi GPIO. You can find our pinout here https://www.justboom.co/technical-guides/boards-pinout/

    If you are planning to use the Amp on top of the DAC HAT you can install a 20×2 right angled header on P2 of the DAC HAT so that the header is soldered from the top side of the DAC HAT. You will then be able to make your connections from underneath the DAC HAT before you plug it onto the Raspberry Pi. The wires will then be sandwiched between the Raspberry Pi and the DAC HAT.

    In this case you don’t need a micro USB Y cable at all.

    I hope this answers your question

    30. Januar 2017 at 13:47 #26406

    Hi Tim,

    sorry, my fault. The P2 on the Amp is not going to be good for you need. The reason I showed you the other boards pinout was really to say that the Amp HAT is the least good option for your project.
    Yet if an Amp is what you need then the only option I can think of is for you to use the Hack3r board that allows you to duplicate the connectivity the GPIO header. On the Hack3r board you will then connect the Amp and the Display maybe by using a stacker header for the second card so that they do not physically overlap.
    At this point you have sorted the electrical connectivity and the mechanical aspect. The pinout I gave you then will also help you determine if in fact you can use both cards at the same time. The power and ground pins are amongst the few things that can be shared so check for the other pins and if there is no overlap you are in luck.

    I hope this answers all you questions.



    28. Januar 2017 at 22:25 #26382

    No worries, glad you solved it.

    28. Januar 2017 at 21:44 #26380

    Hi, the Digi and the DAC both offer the possibility to install a header in P2

    Boards Pinout

    unfortunately the Amp was a bit too crowded to allow for the full header. The alternative here is to use something like the HAT Hack3r

    • This reply was modified 7 years, 2 months ago by JustBoom.
    25. Januar 2017 at 14:24 #26296

    Hi Glyn,

    the Amp Zero is supported in M2P. The Amp Zero, Amp HAT, Dac Zero and DAC HAT all use the same DAC chip so if you don’t find the option for the Amp simply select the DAC and all should be working just fine. In later versions of M2P I know the card selection has been expanded to include all options, in fact if you download the JustBoom version of M2P all our boards are already present.

Viewing 11 posts - 1 through 11 (of 11 total)