https://www.instagram.com/p/DReXcXREyOA/?utm_source=ig_web_copy_link&igsh=NTc4MTIwNjQ2YQ==
Wow! That’s really cool.
I think I saw a video about it a while ago so very glad it came to fruition! It’s great to see it working.
Where were they displayed in the end (I’m not familiar with permaflora.th) and is it a permanent exhibition?
I hope the following is not an inappropriate hi-jack of your thread! If so please moderate it and let me know!
Last year I did an LED sunflower inspired by Jiří Praus‘s Mechanical Tulip: Nevadnoucí Mechanický Tulipán – Jiří Praus and some of Mohit Bhoite’s sculptures: Chintoo | Mohit Bhoite
It’s an LED matrix that’s not square. I wrote a program to lay out the footprints on the board using the sunflower seed equations: The Fibonacci Numbers and Golden section in Nature - 1
I routed the tracks by hand tho’, whilst sitting on the couch with family!
The LEDs are thru’ hole so there’s not much space for connectors so I use the legs of some of the LEDs to connect through to the driver board:
And, of course, as I was on a deadline for the conference I wanted to present it at, I made a mistake with the driver footprint:
Spoilers!
It’s driven as 3 regular rectangular LED matrices. (To a first approximation) Anodes are circles on one side of the board and cathodes are spirals on the other. It took me quite a while to work this out tho’ and, for the circles especially, you have to route around all the legs that a particular track is not supposed to connect to. Here’s the output from some of the tools I built to plan and visualise it:
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