PI ZERO - VOLUMIO - DIY PWM output on pin 12-13

Feb 8, 2024 11:47 AM

JulesO

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The whole thing. Yes the vynil is Rick Astley ;)

Jack 3.5mm is not connected since you can't ground the two negative output of the PAM. Speakers are directly connected to the 2 output of the PAM.

low and high filters before the PAM8403, 100 ohm resistor to the 2 positive output of the PAM to reduce noise a bit

I like those pi zero so much. Final goal is to output the sound via 2 RCA cables so i can play it on my HIFI system.

pi_zero

volumio

raspberry_pi

pwm

diy

Does anyone know if the grounding are OK ?

2 years ago | Likes 1 Dislikes 0

I'd also like to know if adding a capacitor between +5V and ground would reduce noise or not.

2 years ago | Likes 1 Dislikes 0

https://youtu.be/o-YBDTqX_ZU?si=TMqNIvx-WY8rMTe2

2 years ago | Likes 3 Dislikes 0

People should broaden their Astley horizons, he's got a lot of good songs

2 years ago | Likes 4 Dislikes 0

He really does

2 years ago | Likes 2 Dislikes 0

Forever :)

2 years ago | Likes 2 Dislikes 0

2 years ago | Likes 2 Dislikes 0