I Built a Volume Mixer for Gaming and Streaming - deej

deej is an open-source hardware volume mixer for Windows and Linux PCs. It lets you use real-life sliders (like a DJ!) to seamlessly control the volumes of different apps (such as your music player, the game you're playing and your voice chat session) without having to stop what you're doing.
Credit: github.com/omriharel/deej
This is my take on a DIY 3D printed enclosure for the deej volume mixer. The design is based on the MisteR deck. In this video I will show you how to build a volume mixer.
Components Needed:
10k Linear Slide Potentiometers: amzn.to/3vPjVae
10k Rotary Potentiometers: amzn.to/3FEI4oy
Arduino Pro Micro (Clone): amzn.to/3FFDB4V
M3 Heat-Set Threaded Inserts: amzn.to/3hzIxQM
Wire: amzn.to/3jgwisX
Downloads:
3D Model Download: www.printables.com/model/3082...
Deej Sofftware: github.com/omriharel/deej
Follow me on Twitch: twitch.tv/m0dulus
Support Me Making Videos: ko-fi.com/madmodlabs
#Arduino #DIY #3dprinting #Streaming #Gaming #Twitch #tutorial #deej

[@MadModLabs]

Thanks for watching and Subscribing! ❤

[@IcyRespawn]

What a great video, it's super detailed and beautifully shot and edited. Thanks so much for taking the time to tell everyone about your experience building deej! :)

[@qu1n270]

Really good video, was super surprised to see you only have 160 subscribers. With this quality you dev deserve more. * subscribed *

[@majordabalert]

He’s up 1.7k since 8 months ago. Crazy growth brah

[@FlockofSmeagles]

Out here doing gods work. Thanks, man.

[@Joao-cl1xk]

Looks very good. Good video!

[@nyx019]

this is amazing! I'll probably build my own at some point.

[@nicholaitukanov1162]

Incredibly well done video

[@mqxxx]

Great creation!

[@lucgaudreault7257]

Great video. I think the little tab on the rotary pot is used to index it into a hole to keep it from rotating (and have consistent placement). Just make a small indent in the underside of the top panel.

[@b03tz3d]

It is definitely that :)

[@fadybenmoussa2114]

best project ever simple easy handy perfect

[@mqxxx]

Finally a real volume mixer

[@Dbrano3]

This is so sick! Well I know what my next project is gonna be. Also just subbed and followed on twitch!

[@MadModLabs]

Thanks for Subscribing!

[@victorzampieri5645]

Very cool! Subscribed ! Keep going =D

[@HattoriKanaye]

Thank you, man.

[@majordabalert]

Juicy vid brah. Thanks

[@bocke6859]

sheeesh banger bro keep it up

[@Doomfinga91]

Thank you so much for this vid

[@kush_jha521]

nice job I will make this creation 👌

[@-MrDontCare-]

Great video, I am going to do this project too.

[@MadModLabs]

Thanks for watching!

[@ColinMCMXC]

great video, subscribed

[@MadModLabs]

Thank you!

[@HelloHelloXD]

Great project. To look even cleaner the top part should be screwed from the bottom so you wouldn't see the screws

[@JayT9626]

Great video! I wonder will the raspberry pico work too! (Because I have one laying around XD)

[@templario_cl]

por fin lo termine y quedo super bueno, muchas gracias por el tutorial!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@jlrebor2626]

hola buenas, perdona que te moleste pero soy nuevo en estas cosas y quiero aprovechar que encontre a alguien hablando español, tengo que instalar algo para que funcione en el pc o toda la instalacion la hago en el propio arduino? quisiera hacerlo como regalo y no quiero que tenga que instalar algo solo para poder usarlo, gracias

[@templario_cl]

@@jlrebor2626 si, tienen que instalar el IDE de Arduino que encuentras en la Microsoft store, el mismo que muestra en el videos, el otro programa el deej está en el link que deja el

[@templario_cl]

@@jlrebor2626 perdona amigo pensé que te había respondido, tienes que instalar el IDE Arduino que esta en la store de Microsoft y el programa deej que esta en la descripción del video

[@templario_cl]

@@jlrebor2626 hola disculpa la demora, pero debes descargar la aplicacion que esta en el link (deejay) y ademas de eso el ide de arduino, no es dificil de hacer pero es tedioso

[@diegopaz5608]

Amazing! If I wanted to use stereo potentiometers instead of linear ones to control the panning of the right or left channel, would I need to modify anything in the code for them to work correctly?

[@RadioMartyT1B]

I'd like to see some Raspberry Pi Pico tutorials in the future from you. That would be great.

[@MadModLabs]

Great idea! I have been thinking about making a pico-based mechanical keyboard video or a video about picoflasher for the Xbox 360.

[@Weston_Guidero]

Very cool thank you for the video. What do you use the pots for?

[@fabiocopani8311]

Definitely will do this very soon! Is there any room to put some weights inside the 3d printed box?

[@DylanPlayzz871]

Is there a way to put a screen on one of these and shows volumes and icons based on what you select

[@patrznamnie6155]

it would be possible to have these lower potentiometers control the equalizer or somethink?

[@K2lolll]

does this program work for a normal keyboard with one knob, or would I have to make the mixer?

[@FierceDeityLink1]

Hello, great video and thanks for the tutorial! I was wondering if you happened to have the CAD files for it (STEP or if you happened to use Fusion 360), because the sliders that I ordered are a bit longer. Thanks!

[@MadModLabs]

No problem. I just exported the .STEP file: www.printables.com/model/308252-deej-volume-mixer/files

[@sebastiancojuharii5958]

Hei, are they 7.5 cm ? I have them that long but I cant open in fusion :(

[@MadModLabs]

@@sebastiancojuharii5958 You could use the modified model that @FierceDeityLink1 created. His sliders were 75mm long. Here is the Link: www.thingiverse.com/thing:5623994

[@DD-dg6jk]

Hey! Great video, everything was very well explained so decided to take a shot with this project last weekend, 3D printed everything from your list and purchased the same parts you linked. However, I'm not able to install the fader knobs into the slide potentiometers :/ Not sure if the opening isn't wide enough but I tried with quite some force lol. Any help with this please?!

[@MadModLabs]

Yes, the fitment on those knobs is very tight. Maybe too tight. They are supposed to snap on and require lots of force. I have accidentally bent my sliders while pushing them on. The tightness may be different between different 3D printers, depending on how they are configured and how the model is sliced. In the future I may need to remix that STL for a better fit. I have seen other free slider knobs that would fit this build. So feel free to try out a different knob. If you don't want to reprint anything, you may be able to carefully heat the slider with a lighter before pushing the knob on. This would soften the PLA enough to let it deform around the slider. As a last ditch effort, you may be able to trim the slider with a pair of snips or a file. Trimming would also be a cool way to adjust the height of the slider knob without requiring a deeper enclosure. I hope one of these ideas is helpful. Thanks for watching!

[@nacho90000]

i want to do this but with motorized slider, do you think is possible collect the valieu of the volume of each app??

[@200midgets6]

great video! some nice helpful tips there for combining electrical components and 3D printed parts. How did you get the nice red and black heads for your linear sliders? Do you have a dual filament extruder?

[@MadModLabs]

The 3D model for the slider knobs is designed to hold a piece of unprinted filament on top. I just printed them in black and slid a piece of red filament in. Here is a link to where I found the knobs: www.printables.com/model/134529-misterdeck

[@200midgets6]

@@MadModLabs thanks!

[@weenig1387]

Im a little late to the party here, but i got a few B10k potentiometers - but the reading goes all the way to 4095, and even starts reading values from the other potentiometers if i turn it colpmetely. What am i doing wrong?

[@targetdummy4785]

This is a great project. Can a ESP8266 be used for this or is it only Arduino??

[@winandd8649]

Nice project! When using normal potentiometers (not rotary encoders), what happens when I alter volume within an application using an on screen slider?

[@die3ddrucker]

when you move the slider the volume will just be as the same position as the slider

[@winandd8649]

@@die3ddrucker Thanks, I found that out when I made mine 😎👍

[@templario_cl]

muy buen video amigo, podrias mostrar como configurar la aplicacion de python?

[@mlequ7997]

Is resistance so crucial in potentiometers? Those what you linked in the description have 10K ohm, while the ones I want to buy from aliexpress only have 20 and 50k ohm options available and I don't know which one to buy. Can you help?

[@pyro9973]

doesn't matter, this will just be more fine tuned.

[@itamar8424]

hey there great video but i've got a nooby question what does the ohms mean for the sliders i saw there were a lot of 20k and 50k sliders for a cheaper price will they also work i also saw there were for example a20k and b20k what does that mean (sorry if its obvious i am just pretty new to electronics)

[@MadModLabs]

In an electronic circuit slide potentiometers act like a resistor that allows you to change the resistance. The resistance value is given in Ohms. So a 10k potentiometer will reach from 0 Ohms to 10,000 Ohms. The letters A and B represent the rate that the resistance value changes when you turn or slide the potentiometer. "A" potentiometers have a logarithmic taper. They are normally used for analog audio volume, like in an electric guitar. "B" potentiometers have a linear taper. So they have a consistent rate of resistance change across the entire potentiometer slide or rotation.

[@itamar8424]

@@MadModLabs wow thx alot for the detailed explanation really helped me there

[@tamertamertamer4874]

Dammit now I have a new project to make. Now I can either do it the easy way and just take your files or make my own version

[@lavirubinstein561]

Really nice video!! The 3D parts link not working for me. Somebody have another link??

[@MadModLabs]

Thank you for watching! Cults3D has been doing maintenance recently. Here is the link to the same model on my Printables page: www.printables.com/model/308252-deej-volume-mixer

[@TycoTyrannus]

Can you also control a separate usb speaker? Not the main. such as USB2.0 Speaker.exe But I'm not sure its a program ya know. So is it possible?

[@MadModLabs]

Yes. Assuming the USB speaker is connected to your computer. The overall volume of an output device can be controlled by setting one of the knobs to "master"

[@sayanikak]

Can i use a arduino nano

[@d2d2505]

I guess it would be ported to Pico easily. Even wirelessly maybe?

[@senj3ru]

1mm wirefit or need 0.5mm?

[@Likwidfox]

10$ says you have some 3M Carbon Fiber that would liven that up.

[@MadModLabs]

I bet a carbon fiber wrap would look nice. Thanks for watching!

[@sebastiancojuharii5958]

My linear potentiometers are 7.5 cm long, could someone please help me with the remodel in order to fit them? I tired fusion but i really cant :(

[@MadModLabs]

You could use the modified model that @FierceDeityLink1 created. His sliders were 75mm long. Here is the Link: www.thingiverse.com/thing:5623994

[@sebastiancojuharii5958]

@@MadModLabs Thank you so much!

[@Lyonese]

will work with atmega328 ?

[@MadModLabs]

deej also works with the atmega328. The first version I ever built was using an Arduino Uno. You will be limited to 5 volume knobs because the atmega328 only has 5 analog pins.

[@mimasweets]

how didyou know the pins 4, 6, 8, and 9 where analogue when they don't have the preceding A?

[@MadModLabs]

Taking a look at the pinout diagram will show you what each pin can be used for : arduino.stackexchange.com/questions/16392/arduino-pro-micro-analog-pinouts

[@mimasweets]

@@MadModLabs Thank you so much! I've watched this video a hundred times before i got the courage to order all the items and make my own. :3

[@Martinchox]

Does anyone sell something like this? already made I mean, like a streamdeck but with knobs

[@MadModLabs]

There is a product called the GoXLR Mini that is kind of similar in function. It is kind of expensive though. For a stream deck with dedicated volume control you should definitely check out the MisteR Deck. I have a video about it.

[@Martinchox]

@@MadModLabs yeah, I might as well try to make it, will see if my orders from AliExpress ever came.

[@MadModLabs]

@@Martinchox Nice 👍 Send me a message if you have any questions.

[@Martinchox]

@@MadModLabs im in the process of making it, quick question, can i add a 2 digit screen to this project? so i can see the current volume %?

[@MadModLabs]

@@Martinchox There is probably a way to accomplish this. You may want to look for a project that uses Arduino code to control a 7-segment display. I am not sure how to combine it with the deej software though. Someone on the deej discord server could probably offer more advice on modifying the code

[@brazed420]

The pro micro is not available in my country "Australia"

[@johnb1990]

Core Electronics has them, but are $32. I'd get a ten pack of aliexpress for SFA.

[@targetdummy4785]

DO YOU SELL THE 3d PRINTED BOX??

[@MadModLabs]

I do not offer these for sale anywhere since the model is free. I could probably offer printing services in the future for the right price.

[@jamegumb7298]

3D printers are cool but I just prefer CNC with alu still.

[@BlackWZRD]

I fried a board because the pins of the sliders touched the board. So be carefull about that.

[@ilikepizza3x22]

same

[@sha8y]

🤣🤣

[@Enderkruemel]

why an more expensive pro micro, when any normal cheap Arduino can do the same? it doesnt use the hid Interface. i would recommend using an Arduino nano.

[@LaNoturna1115]

Or, ya know, just use MIDI mixer......

[@robertaguirre85]

Leeme spend 125 dollars real quick

[@TrevHowsonDemon82]

This is great, would this still work if my headphones are usb with a pre amp?

[@MadModLabs]

Yes. deej controls application volume just like manually adjusting the volume mixer. It should work the same for any output device.

[@TrevHowsonDemon82]

@@MadModLabs awesome I'm in this tonight then .

[@Schjoenz]

it doesn't work on windows 11 anymore

[@karloshebron7614]

Was able to make my "mixer" work following all your instructions, however, my setup seems to forget what my potentiometers does when I close the Arduino IDE, even when the sketch is successfully uploaded, is there a fix for that?

[@targetdummy4785]

This is a great project. Can a ESP8266 be used for this or is it only Arduino??