Site Map - skip to main content

Hacker Public Radio

Your ideas, projects, opinions - podcasted.

New episodes Monday through Friday.


hpr3077 :: Video conference Push to Talk

Building the push to talk button missing from many video conference tools

<< First, < Previous, Latest >>

Hosted by DanNixon on 2020-05-19 is flagged as Explicit and is released under a CC-BY-SA license.
Tags: arduino, linux audio, electronics, hardware.
Listen in ogg, spx, or mp3 format. | Comments (2)

Part of the series: Hobby Electronics

Building electronic devices and kits, repairing electronics and learning about components and their uses.

For the sake of archival, "state of the world" refers to the COVID-19 pandemic.

The code and CAD files for this project can be found here.

Relevant links:

  • PulseAudio is the sound server used by many Linux distributions
  • pulsectl is a Python library that allows you to control a PulseAudio server
  • NeoPixels are cool addressable LEDs
  • The Teensy is a small but powerful microcontroller development board
  • pySerial is a library allowing you to use serial ports in Python
  • PlatformIO is a tool for making software development for embedded platforms easy

Early prototype:
Electronic parts assembled for testing

Assembled electronics fitted into case ready to be closed:
Electronics fitted into case ready for case to be closed

View of the top of the case, showing Cherry switch and NeoPixel LED indicator:
View of the top of the finished device showing button and indicator LED

View of the bottom of the case, showing USB port and some of the nicer M3 screws from my parts bin:
View of bottom of the finished device showing screws and USB port

Plugged in and powered on, showing the muted state:
Device showing the muted state

Button pushed, showing the unmuted/mic live state:
Device with the button pushed showing the unmuted state


Comments

Subscribe to the comments RSS feed.

Comment #1 posted on 2020-05-19T11:03:50Z by Ken Fallon

Brilliant Idea

I may just try this. I'll probably use different parts.

Comment #2 posted on 2020-05-19T18:26:02Z by jezra

an amazing mix of custom hardware and software

Thank you for sharing. I have now fallen down a rabbit hole of links to software I didn't know I needed. :)

<< First, < Previous, Latest >>

Leave Comment

Note to Verbose Commenters
If you can't fit everything you want to say in the comment below then you really should record a response show instead.

Note to Spammers
All comments are moderated. All links are checked by humans. We strip out all html. Feel free to record a show about yourself, or your industry, or any other topic we may find interesting. We also check shows for spam :).

Provide feedback
Your Name/Handle:
Title:
Comment:
Anti Spam Question: What does the P in HPR stand for ?