Add Audio to your Raspberry Pi Pico 1 & 2! | RP2350 | RP2040

Learn how to add audio input, output, and machine learning capabilities to your Raspberry Pi Pico 2! Works just as well on original Pi Pico, but the machine learning inference is significantly faster on RP2350. This step-by-step guide covers everything from setting up analog and I2S microphones to playing audio through speakers and running a keyword spotting model with the new RP2350 chip.
Materials, #aliexpress links
Raspberry Pi Pico 2 (s.click.aliexp...)
Grove Shield for Pi Pico s.click.aliexp... (cheaper alternative s.click.aliexp...)
Grove cables s.click.aliexp... s.click.aliexp...
I2S Microphones s.click.aliexp... s.click.aliexp...
Grove Analog Microphone www.seeedstudi...
Alternative Analog Microphone s.click.aliexp...
5w 8 Ohm Speakers s.click.aliexp...
PAM8406 Digital Amplifier s.click.aliexp...
Github hoodie :)
s.click.aliexp...
Most of the sketches used in the video are available as examples for Arduino-pico core, the rest are here:
gist.github.co...
Arduino-pico core:
github.com/ear...
Keyword spotting project:
studio.edgeimp...

[@Hardwareai]

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I have more countries too, let me know and I'll post them here.

[@laurensslats8184]

You make it look so easy. I will give it a try as well shortly, I should have some mics lying around here somewhere.

[@Hardwareai]

Let me know how it goes!

[@thingnet-todoro]

I watched a good video.
I'm trying to make a DK board using RP2350B.
I can't find the I2S pin map data in the I2S Audio part.
I can't find the pin list or rules for using GPIO0~GPIO47 as I2S pins.
Can you help me with this?

[@Hardwareai]

Thanks for watching!
And no, from the top of my head, I cannot help you with that - but Raspberry Pi community is usually very helpful, maybe worth posting to the forum there?

[@thingnet-todoro]

@@Hardwareai Thank you for your reply.
According to what I found out,
RP2040/2350 doesn't have HW I2S device.
It is said that it is processed by SW using GPIO.
The constraint is that BCLK and LRC must be consecutive pins.
I will try to test this on my DK board to see if it is true.
There seems to be a difference between knowing that it works and why it works.

[@AsifKhan-if2jp]

Can you guide me i am doing a project "self-driving car" i am confused in the hardware.

[@Hardwareai]

I don't think this is related 🤣

[@exploring-electronic]

Macarena-zed! 😅

[@Hardwareai]

So, I actually almost fell back from my chair when testing that code, hahaha. It was very loud and sudden. The video in intro of course was taken later and is a bit staged.