rotary encoder with rpi zero and justboom amp zero

Tagged: justboom amp zero, Rotary Encoder, rpi zero

This topic has 3 replies, 3 voices, and was last updated 7 years, 8 months ago by Mbydeen.

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Posted in: Max2Play on Raspberry PI
petefilltir premium

12. April 2017 at 15:12 #28172

hope someone can help!
ive set up the encoder as per instructions https://www.max2play.com/en/2016/12/rotary-encoder-ist-now-compatible-with-justboom-sound-cards/ and solderd the encoder to gpio pins 16 and 18 on the amp but the encoder doesnt work, in the Rotary Encoder Start Options it has this in the box „-c hw:0 -m Digital –gpiorot=23,24 –vol=60“ the player works but the encoder doesnt, so Ive changed the entry to „-c hw:0 -m Digital –gpiorot=16,18 –vol=60“ as those are the pins used on the amp zero but I get no sound at all. its driving me mad, can anyone help?

thanks

Pete

JustBoom Moderator

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
https://pinout.xyz/pinout/amp_zero

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

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
https://www.max2play.com/en/2016/12/rotary-encoder-ist-now-compatible-with-justboom-sound-cards/

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 7 years, 8 months ago by JustBoom.
Mbydeen

19. April 2017 at 11:06 #28339

Hi JustBoom,

Thank you for your answer and your input in the forum.

Best Regards,
Mohammad Mbydeen