Modules - Patchbox OS Docs

Patchbox OS
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Dedicated topic for Modules - Patchbox OS Docs page.
This is a companion discussion topic for the original entry at https://blokas.io/patchbox-os/docs/Modules/
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I used the command patchbox module install to install the sine-module
but it failed and I’m unsure what this means
E: Repository ‘http ://raspbian.raspberrypi.org/raspbian buster InRelease’ changed its ‘Suite’ value from ‘stable’ to ‘oldstable’

N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.

E: Repository ‘http ://archive.raspberrypi.org/debian buster InRelease’ changed its ‘Suite’ value from ‘testing’ to ‘oldstable’

N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.

Manager: /usr/local/patchbox-modules/imported/sine-module directory deleted

Error: sine-module.module installation failed

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Try running:

sudo apt-get update --allow-releaseinfo-change --fix-missing

And retry the previous command.

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You might want to mention this fix on the startup guide if this is related to the release of Bullseye. Was troubleshooting without finding this and I had to re-flash my SD card. Only on the second rebuild did I find this thread. Looks like I’m finally moving again.

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The sine wave module is outputting what’s almost a 440 Hz tone, but it’s off; I’d say it’s around an F4 (349.228 Hz).

I’m using the Pi’s onboard headphone jack with the recommended configured settings. There’s also a rhythmic pulsing sound and an extremely high-frequency pitch, it might be picking up noise from the microprocessor or something.

Just for your perusal/my own interest!

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The built-in jack on Pi is based on a PWM wave and is inaccurate and with audible noise, especially if you reduce the volume in alsamixer. Best to get a dedicated audio card. :slight_smile:

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Gotcha, I seem to recall reading something about how the differing mains voltages between NA and the UK might account for at least part of the PWM noise?

I was planning on grabbing a Pisound either way, but using the headphone out makes for a very compelling marketing campaign, haha

Cheers!

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