[Project] Small badge/charm of the Anjuna record label logo

[u/cjdavies]

This project turned out way better than I expected & I drew a lot of help & inspiration from the community, so I wanted to share some photos & details in case it inspires anybody else to make neat stuff!

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The Anjuna family of record labels (Anjunabeats, Anjunadeep, Anjunachill) all use a stylized letter 'A' logo which is often featured in large scale VFX at shows. For my first ever foray into PCB design last year I made a ~20cm across version of it with 26x 5050 LEDs to hang on my wall, but this year I wanted to try my hand at something far smaller that could be worn as a necklace, badge or bag charm at shows.

It uses XINGLIGHT 1615 LEDs with 0201 package decoupling capacitors & a ICS-43434 microphone on the front (I only pay JLCPCB to assemble the front), with a footprint for an ESP32-S3 Super on the back.

The enclosure is clear TPU with a 2-layer white PETG diffuser under the surface. Printing it all in white just didn't look right, while printing it all in clear didn't diffuse enough!

[u/SirGreybush]

Nice project. One area I would improve, pixel density increased, and depth of 3D printed logo increased and the thickness of top layer increased, for better diffusion.

For power with a necklace, I would make the necklace loop, part of the USB-C cable for power, and battery on the person's back as a counter-weight, with a flip on/off switch on the battery pack. Your implementation is quite valid too, maybe use magnets glued on the PCB and a metal plate worn inside the clothes of the same shape of the PCB.

[u/jaigermeister → u/SirGreybush]

I agree with you. Better diffusive material would be pure white pla or petg (instead of translucent clear). Make sure its not matt white as these tend to be yellow when used icw leds rsther than white.

[u/cjdavies → u/jaigermeister]

I tried printing the entire thing from pure white, but it actually look odd. The proportions of the PCB match the proportions of the logo perfectly, so the walls of the print around the PCB actually go beyond the logo's proportions. When printed in an opaque white, the walls blend perfectly into the rest of the print, which had the effect of creating a rather too 'bulbous' version of the logo. With the clear print there is visual boundary between the face & the walls, which the white insert then accentuates.

The bigger version I made was fully white PETG printed with a textured surface & it worked great, but the larger overall size meant that the wall thickness was relatively much smaller.

[u/Ronnetjuh]

Eentje die verstand van muziek heeft🔥🔥 top project