Instructions | (Funny) Audio spectrum by colors

1

First of all, collect the components.

The ESP32 and the PCM5102A I2S DAC are mandatory.

Add the audio amplifier and the loudspeakers if you want to listen music without any other device (headset, your home audio device, ...)

Add the two WS2812B 12 LEDs rings (strongly suggested) if you want to see the colored real time audio spectrum. I hope this is the reason why you are builiding this.
2

Assemble the boards as described in the schematic

I don't suggest to solder wires to the boards (as I did). Do it only if you feel pretty sure of what you are doing (You risk to damage the PCBs and/or the electronic components). As an alternative you could use connectors and jumpers.

See the details for glueing and soldering the LEDs ring at the next step.
3

Glueing and soldering the WS2812B 12 LEDs ring

Glue the ring to the plastic yellow shield. Do some attempts to set the loudspeaker on place and check that the 3 wires (DI, GND and Vcc) don't push the loudspeaker cone.

To avoid any problem, I made the three 1mm holes as you can see in this picture

Before pushing the boards into the loudspeaker box, check if everything works correctly loading the Software.
4

Software installations

Go to my Github repository https://github.com/guido57/Funny-Spectrum to download and install the complete software I wrote (ehm ... I forked most of it!)

I used Visual Studio Code with PlatformIO .only .. please don't ask me anything about Arduino IDE or other IDEs ...
5

Light shielding

To improve the quality of mixed RGB colors, diffracting the LED light you can:

place some paper in front of it (as I did) or some semi transparent plastic

Discussions

Guido wrote 02/01/2021 at 21:06

Please, take into account that this is not an HI FI solution at all! The qualty of my 6 Euro loudspeakers is slightly acceptable. You can get a better quality using a good audio amplifier and first class loudspeakerr but of course you have to arrange a different way to set up the LEDs rings.

Are you sure? yes | no

(Funny) Audio spectrum by colors

Discussions

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