pico-mp3 | adafruit | Page 1

stoic widget Nov 13, 2021, 2:02 AM

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This is what I have so far

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tulip fulcrum Nov 13, 2021, 2:05 AM

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For a Pico MP3??

stoic widget Nov 13, 2021, 2:07 AM

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A mobile MP3 player with I2S DAC, battery, LCD and microSD.

tulip fulcrum Nov 13, 2021, 2:09 AM

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Very cool

stoic widget Nov 13, 2021, 2:10 AM

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I am going to try to bit-bang a I2S signal, GP26 to WSEL, GP27 to BCLK, GP28 to DIN.

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is that possible?

wraith cypress Nov 13, 2021, 3:17 AM

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"""
CircuitPython I2S MP3 playback example.
Plays a single MP3 once.
"""
import board
import audiomp3
import audiobusio

audio = audiobusio.I2SOut(board.GP0, board.GP1, board.GP2)

mp3 = audiomp3.MP3Decoder(open("slow.mp3", "rb"))

audio.play(mp3)
while audio.playing:
    pass

print("Done playing!")

Taken from https://learn.adafruit.com/mp3-playback-rp2040/pico-i2s-mp3

stoic widget Nov 14, 2021, 10:36 PM

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Decided to perfboard the design so I can build it in a shorter amount of time. Good thing this does not require differential signaling.

stoic widget Nov 18, 2021, 9:25 PM

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Could I connect the output of the PowerBoost to the VSYS?

blazing tree Feb 17, 2022, 7:28 PM

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Is there any possibility to change the playback volume? Like *0.8 for 80% "loudness"
(I'm using the max98357 and a RP2040 together with a SD-Card Reader to stream the mp3-files directly - This works fine 🙂

#pico-mp3