Markus Loeffler's pages

I found this great new filament "EONO 3D Print Glow in the Dark TPU" and I could use the same settings I used for the "SainSmart white". They look even better as this filament is see-thru which makes the LED even brighter. The 4 colors of the wristbands are super vibrant in UV light.

Only downside is that the colors from the WS2812 are now shifted in whitepoint depending on the base color of the filament.

If you fancy one check out my store

I set out to make a glowing, sound-reactive wristband — but my first try with TPU 95A was a total fail.  

After some help from the BambuLab forum, I fixed my filament settings and finally got amazing results!  

For this second batch of LED wristbands, I’m using fully pre-assembled PCB boards and custom LED strips, all packed tightly into a 3D-printed TPU shell. The design is compact, requires no extra fasteners, and charges via micro-USB.  

With the push of a button, you can switch between fixed color modes and enjoy the light show.  

Just finished the 2nd generation of the LED bracelet. I used a new filament this time and it was hard to get the settings right. I used a 95A TPU and it was generating a lot of strings. luckily with the help of the BambuLab forum I was able to fine tune the flow and retract parameter to make a nearly perfect print

Crystal Glowpop is a new take on my original sound-reactive LED cube — now wrapped in a sleek, crystal 3D-printed enclosure. Inside the frosted case is a 5×5 WS2812 LED matrix driven by a ATtiny85. The animation is fully sound-reactive, creating vibrant light patterns that pulse and shimmer in sync with ambient audio.

The big upgrade? The case.
This version uses a 3D-printed translucent "crystal" shell that diffuses light beautifully, turning the cube into a glowing ambient sculpture — perfect for desktop mood lighting, chillout spaces, or DJ booths.

🛠 STL files are available for download, so you can print the enclosure yourself and build your own Crystal Glowpop at home.

✨ Features:

• Sound-reactive animation engine
• 5x5 WS2812 matrix
• ATtiny85 
• USB rechargeable
• Custom 3D-printed frosted case (STL files provided)

🔗 Want to build your own?
You can grab the Glowpop PCB  from my Tindie store. STL files and schematics are included in the project files. 

I assembled all boxes and PCB that I currently have:

16 GlowPops. 4x4. One epic symphony of sound-reactive lights! 

 It’s not just a wall—it’s a party for your eyes! Mesmerizing 3D colors that pulse, dance, and vibe to the music you love.

💡 Warning: May cause uncontrollable awe and a sudden urge to rave in your living room.

Let’s light it up, together! 

And here is the wall in action. They are supposed to all start on the same color scheme but somehow 3 of them are one step ahead. Not sure how that happened as I turned them all on at the same time with an external power supply. 

Each time you turn them on & off they advance on there internal timeline ...

I'm thrilled to share a project that's very close to my heart – my new Kickstarter campaign, GlowPop. As someone deeply passionate about eye candy and synesthesia , I've poured my energy into creating something truly innovative.

GlowPop is a sound reactive light box - the Fold It Yourself box comes in different colors and paper quality. The box is manufactured under the FSC certificate using recycled paper. Filled with mesmerising 3D colors will it immediately catch your eye. If you like eye candy then this is for you. (I think it crosses psychedelics with Winamp :)

Link to kickstarter:

https://www.kickstarter.com/projects/markusloeffler/glowpop-a-sound-reactive-light-box 

The box is 10 cm tall and wide and can be set anywhere in the house. GlowPop runs on battery for at least 24 hours and can be recharged via a USB port.

Here is a  video showing the inside and giving more details about the hardware: