Seven segment display

Big 3D printed RGB LED seven segment display clock

Links

• youtube.com - Segmented Displays by Posy
• Wikipedia Seven-segment display Contains standard segment naming
• Segment design SVGs
• Firmware source code - GIT

Parts

• WS2811 Aliexpress White PCB Ordinary, 5m 60 IP30

Design / planing / idea phase

I got further interested in 7-segmented displays after a fellow hacker made a project with it, and i wanted to explore my fondness of this delightful concept. I decided to make a clock with it, but this is a concept that has been done before. So i wanted some twist on the concept, and rememered this wonderful video: youtube.com - Segmented Displays by Posy. Hence i chose a design (Classic black) optimized for displaying numbers, but also one that still retained the boxy look. Credit to the designer Michiel de Boer(Posy).

TODO Wire diagram

Diffusion

I tested both clear and white PLA with different layer heights by printing squares. Then i moved onto the distance. I determeined 2 layers of white PLA at a distance of 1.5 cm. was a good compromize.

CAD

Files

• Project box Box STL, Lid STL, FreeCAD unfortunately the FreeCAD model broke.
• Digit TODO

Digits

I used FreeCAD to design a bottom and top piece based on the SVG files.

Box

I used this GRABCAD model License: GRABCAD Non-Comercial Licenses TODO Add picture of DC barreljack

Wiring

Firmware

Fading effect

I chose to add a slow fade effect as to not disturb ones periferial vision.