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Recent Topics

Need Help With No Audio From 3.5mm Jack

by rebeltaz

I have asked this question over on the Raspberry Pi forums as well as the Raspberry Pi reddit, with no one offering me any help whatsoever. Thought I'd give this group a shot...

I have a Kano computer kit utilizing a Raspberry Pi 3b. I put Raspbian Buster on an SD card and setup everything up. No matter what I do, I cannot get audio output on the 3.5mm jack with one exception. I have tried forcing Analog Audio using raspi-config , right-clicking on the volume control and through amixer. Audio out through the HDMI interface works fine. I can get audio output through the 3.5mm jack if I force omxplayer using "-o local" but no other program will use the audio jack including VLC or system sounds and the volume control has no effect when I run it that way - even if I right-click and switch to HDMI and back. I have read that PulseAudio might be an issue, and I did try to uninstall that with no difference, but I need that installed anyway for the program I need to run - SilverJuke. I have also noticed that when I run raspi-config, the audio setting doesn't seem to be sticking - i.e. it always defaults to the default setting each time I enter that menu, whereas the other settings seem to stay where I put them. I am out of ideas if anyone could offer some advice/help....

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Community Maker Contest

by kadse

Hey, we're a maker community revolving around 3D Printing, Arduinos & other MCUs, SBCs and other related topics! Since everyone is at home and probably has plenty of free time on their hands now we're hosting a project contest!

Our current price pool contains a small amount of cash and an OrangePI, join the contest on Discord: https://discord.gg/hkWjdZF

You can submit both new and old projects, as long as they're selfmade in 4 categories:

  • 3D Printing / CNC Design
  • Blinky stuff
  • Nerdiest project
  • Undefined (For everything that doesn't fit into any other category)

Happy making & stay safe!

PS: This is not commercial, the prices are community-contributed and we're not monetizing this giveaway.

community contest discord giveaway
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Bee colony pre-swarm indicator

by ljbrumfield

Ok.... basically I want to use a Rasbpberry Pi to monitor the sound inside of a bee hive and listen for

"a sort of warbling noise that varied between the notes A and C sharp; that's 225 - 285 Hz in terms of frequency. "

and then trigger an alarm. I'm already using the Pi as a weight scale/bee counter/weather station so its already out there... this would just be an added feature. I've been following this other thread

https://www.thingiverse.com/groups/raspberry-pi564/forums/general/topic:40612#comment-2772023

and I see people mention Audacity so I went to their website & saw downloads for ubuntu & linux mint, but they say the Pi is unsupported. What build will work on the Pi? Anyone have an idea how to set up Audacity to do what I'm looking for? An insight is appreciated.

Link to the apiductor

https://web.archive.org/web/20050717233655/http://www.beesource.com/plans/apidictor.htm

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Pi to screen adaptor / Pi holder

by Yann_YADesign

https://www.thingiverse.com/thing:4179659
This thing can be usefull for many Pi users who does not want to see the Pi lies on the table in front of the screen...

Raspberry Pi to Screen adaptor - adaptateur écran Raspberry Pi - VESA mount 100x100 mm
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Question and Advice On Pi

by Daimein2007

Working on a project I need the pi to listen to the audio of an acoustic guitar and give a green box on the touch screen when a prerecorded chord is duplicated correctly and a red box on the touch screen when chord aka sound is not matched played wrong.
Also, I need it to have the ability to connect an electric guitar and listen to strings to do the same thing as the acoustic with the mic only tap into the pickups on the electric to see if the correct chord was played correctly. I'm thinking of using tuner software for the comparison. Also, I want to use the 3b+ so can keep things small and no adapters for HDMI as well as giving pi a touch screen until connected to the HDMI device. Any advice on how you would build this what hat you would use and mic USB or otherwise. The goal is to try and build for under $100 in hardware. Will be designing and printing case, a touch screen wouldn't have to be huge just large enough to use until a larger HDMI device connected. Any thoughts appreciated.

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