DevHeads IoT Integration Server•17mo ago

How to integrate a rotary encoder for volume control with ESP32 and MAX98357A DAC?

Hello guys i'm looking to enhance my ESP32 smart clock project by adding volume control via a rotary encoder. I plan to use the MAX98357A I2S DAC for audio playback and want to know the best approach to integrate a rotary encoder with the ESP32, specifically how to read the rotary encoder's position and direction changes and apply the volume changes to theMAX98357A DAC's output in real-time
I'd appreciate guidance on the most efficient way to implement this feature

Solution

https://youtu.be/4GXgd6Nbv94?si=ywU1EKnh-Uxh4Cy6

YouTubeFREE WING

ESP32 I2S DAC Audio playback quality comparison Part 1

Warning !! This Movie has Very Loud Volume
Whats DAC is Winner !?

MAX98357A
CS4344
ES7148
comparison Part 2
https://youtu.be/ERhKqHNtupI
PCM5102A
UDA1334A

I added an MP3 playback function to "Bad Apple!!", so I compared the audio playback quality of the I2S DAC Audio.
In this program , The "mp3→loop()" calling cycle is NOT CONSTANT...

Jump to solution

NayelAPP•8/23/24, 4:00 PM

Hi Daniel, How are you? I wanted to mention that I strongly advise against using the MAX98357A for your project. This chip has some unpredictable behavior, and you might experience popping or crackling noises, even if you add bypass capacitors on the input. If you'd like more details or need further assistance, feel free to create a thread, and I'll be happy to help you with your project.

Solution

NayelAPP•8/23/24, 4:00 PM

https://youtu.be/4GXgd6Nbv94?si=ywU1EKnh-Uxh4Cy6

YouTubeFREE WING

ESP32 I2S DAC Audio playback quality comparison Part 1

Warning !! This Movie has Very Loud Volume
Whats DAC is Winner !?

MAX98357A
CS4344
ES7148
comparison Part 2
https://youtu.be/ERhKqHNtupI
PCM5102A
UDA1334A

I added an MP3 playback function to "Bad Apple!!", so I compared the audio playback quality of the I2S DAC Audio.
In this program , The "mp3→loop()" calling cycle is NOT CONSTANT...

NayelAPP•8/28/24, 8:23 PM

the best is the ES7148

Daniel kaluAPP•8/28/24, 8:29 PM

I will watch the video and then decide thank you @Nayel

Daniel kaluAPP•8/28/24, 8:37 PM

Thanks for the video once again after watching the video down to the part 2 , I think i will go with the PCM5102A I2S DAC for better audio quality and stability. I'll read the rotary encoder's position and direction to adjust the volume in real-time. From what I have see. , the integration with the PCM5102A should be straightforward.

NayelAPP•8/28/24, 8:38 PM

Great, do you need help for the rotary encoder?

How to integrate a rotary encoder for volume control with ESP32 and MAX98357A DAC?

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