Raspberry Pi 3 Model B - theCorpora Support Forum

Raspberry Pi 4 Model B Audio

chrisbuy — Sun, 04 Aug 2019 12:48:24 +0000

Who got audio working for the Raspberry Pi 4 Model B?

Originally I got during installing the I2S_AUDIO_KERNEL_MODULE...

qbo@qbo:/tmp/rpi-i2s-audio$ sudo make install
make -C /lib/modules/4.19.58-v7l+/build M=/tmp/rpi-i2s-audio modules modules_install
make: Map '/usr/src/linux-headers-4.19.58-v7l+' gets entered
Building modules, stage 2.
MODPOST 1 modules
INSTALL /tmp/rpi-i2s-audio/my_loader.ko
DEPMOD 4.19.58-v7l+
Warning: modules_install: missing 'System.map' file. Skipping depmod.
make: Map '/usr/src/linux-headers-4.19.58-v7l+' is exited

So I recompiled myself the kernel in order to get a valid System.map. The error is gone but NO AUDIO!

When I run ' aplay -l', I still get...

**** List of PLAYBACK Hardware Devices ****
card 0: ALSA , device 0: bcm2835 ALSA 
Subdevices: 7/7
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
card 0: ALSA , device 1: bcm2835 IEC958/HDMI 
Subdevices: 1/1
Subdevice #0: subdevice #0

And I run 'arecord -l', I am getting...

**** List of CAPTURE Hardware Devices ****

What am I doing wrong? Does anybody know?

lsmod shows my_loader...

Changing to Raspberry Pi 4 Model B

chrisbuy — Wed, 03 Jul 2019 10:21:49 +0000

Anyone busy with that? I had a small issue with my Raspberry Pi 3 Model B in A.bo when soldering so I 'have' to replace the Raspberry Pi. Why not upgrade at the same place? The form factor remains the same, the GPIO remains the same, the Raspian OS remains the same (although slightly newer) and the price of the Raspberry Pi remains with reasonable limits (40 - 60 EURO)!

Feel free to contact me to exchange ideas but expect more info from me when I finally receive (end of July 2019) my Raspberry Pi 4 Model B...

How to use external speakers

Vianne — Sun, 18 Nov 2018 15:10:14 +0000

Hi!

I'm intending to use the Qbo for a demo (in just 2 days 😱 ) but I think the audio from the built-in speaker will not be loud enough to be heard throughout the room. I tried connecting a speaker to the audio jack from the Raspberry pi but I found out the audio is managed by the Q-board... I could not find a setting in the code where I could easily change this. Can you help me out? What do I have to change in order to make using external speakers possible? Thanks in advance!

Changing to Raspberry Pi Model B+

chrisbuy — Wed, 14 Nov 2018 06:22:15 +0000

Would i be possible to swap the Raspberry Pi in the preassembled units to a Raspberry Pi Model B+? Any speed increase can be considered useful I guess. Do we need to tweak OpenQbo?

How to connect external microphone with raspberry pi?

Gokul — Wed, 10 Oct 2018 09:50:15 +0000

Does the raspberry pi take USB or Mic on 3.1 jack? Is there any way to connect the external microphone with raspberry pi to work.

Raspberry Pi original files

shubhashree_dash — Wed, 20 Jun 2018 11:39:50 +0000

While tinkering the OS crashed so I want the OS image to load on the SD card. I wanted to know from where can I get the original files and OS Q.bo came with to download. I do not require OpenQbo but the original OS image which prompted on boot and had access to Scratchx extension as well the as demo file.