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  • Author Author: tariq.ahmad
  • Date Created: Date Created
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Raspberry Pi 4 Music Player w/ Analog Controls -- Episode 435

 

I love the Volumio music player software for the Raspberry PI, but I am tired of digging through my pockets for my phone to change the volume or pause a song. In this episode, we are going to fix that by adding a bunch of buttons and knobs in addition to a touchscreen display to control Volumio 100% from hardware and without the need for a web browser or app!

 

Click Here for access to all the supporting files you will need to replicate this build! 

Bill of Material:

Product Name Manufacturer Quantity Buy Kit
TRANSCEND 16GB MicroSD Card, Preloaded with NOOBS (V2) OS Installer for Raspberry Pi TRANSCEND 1 Buy Now
RASPBERRY-PI Single Board Computer, Raspberry Pi 4 Model B, BCM2711 SoC, 4GB DDR4 RAM, USB 3.0, PoE Enabled RASPBERRY-PI 1 Buy Now
RASPBERRY-PI Raspberry Pi 7" Touch Screen Display with 10 Finger Capacitive Touch RASPBERRY-PI 1 Buy Now
STONTRONICS AC/DC Power Supply, 1 Output, 15.3 W, 5.1 V, 3 A STONTRONICS 1 Buy Now
ITW SWITCHES Pushbutton Switch, Industrial, 59 Series, 13.6 mm, SPST-NO-DB, Momentary, Square ITW SWITCHES 2 Buy Now
ITW SWITCHES Pushbutton Switch, Industrial, 59 Series, 13.6 mm, SPST-NO-DB, Momentary, Square ITW SWITCHES 1 Buy Now
ITW SWITCHES Pushbutton Switch, Industrial, 59 Series, 13.6 mm, SPST-NO-DB, Momentary, Round ITW SWITCHES 1 Buy Now
ITW SWITCHES Pushbutton Switch, Industrial, 59 Series, 13.6 mm, SPST-NO-DB, Momentary, Round ITW SWITCHES 1 Buy Now
TE CONNECTIVITY IC & Component Socket, 16 Contacts, DIP Socket, 2.54 mm, 7.62 mm, Phosphor Bronze TE CONNECTIVITY 1 Buy Now
MICROCHIP Analog to Digital Converter, 10 bit, 200 kSPS, Pseudo Differential, Single Ended, Serial, SPI MICROCHIP 1 Buy Now

 

Additional Parts:

 

Product Name

Adafruit CAP1188

SPDT Toggle Switch

10k Linear Taper Potentiometer

Protoboard

Slide Pot - Motorized (10k Linear Taper)
Attachments:
Resources_Pi4MusicPlayer.zip
image
Raspberry Pi 4 Music Player w/ Analog Controls

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  • What a fun project - great job. I was determined to rebuild a vintage radio and replace the tuner's linear needle with a similar motorized pot. Based on the research I did, it was the most reliable way to build an inexpensive and compact linear actuator for a short-travel lightweight load (needle) with builtin encoding. I didn't need the conductive feature for my project, but I did learn that such knobs are available for the intended application (audio mixing boards). You can buy these knobs (and sometimes the pots too) pulled from broken mixing boards. If you want to buy a new knob, Selco advertises them available in quantities as low as one. Their website indicates that conductive knobs are available, but does not indicate which part numbers have that feature. https://www.selcoproducts.com/knobs/slider-knobs

    I've also used Volumio in projects and love it. A feature I really longed for, and would like to have time to develop and share as a plugin someday, is integrated control for a I2C FM Tuner module.

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  • What a fun project - great job. I was determined to rebuild a vintage radio and replace the tuner's linear needle with a similar motorized pot. Based on the research I did, it was the most reliable way to build an inexpensive and compact linear actuator for a short-travel lightweight load (needle) with builtin encoding. I didn't need the conductive feature for my project, but I did learn that such knobs are available for the intended application (audio mixing boards). You can buy these knobs (and sometimes the pots too) pulled from broken mixing boards. If you want to buy a new knob, Selco advertises them available in quantities as low as one. Their website indicates that conductive knobs are available, but does not indicate which part numbers have that feature. https://www.selcoproducts.com/knobs/slider-knobs

    I've also used Volumio in projects and love it. A feature I really longed for, and would like to have time to develop and share as a plugin someday, is integrated control for a I2C FM Tuner module.

Children
  • in reply to andrewcrice

    Andrew, that blew my mind. I am an audio engineer and own a few control surfaces with motorized faders that DO have conductive handles on them. But it *never* crossed my mind to just use one of those. I guess that is just how deep in DIY I was on this project!

    I would still like to make one, but if that does not pan out, Ill probably go that route. Though in the ~week of using the device it really has not been an issue. I can still grab what is there and move it. Mostly aesthetic at this point.

     

    Thanks for the great idea and jolt back into reality! haha

     

    -Kaleb