Thanks for the reply Janekm, you've got me thinking...
Wiring up individual LEDs, in a 8x64, using conductive thread, sounds practically impossible to me.
Challenge accepted! First off, I'll use 3 layers of fabric. The LEDs sit on the top layer. The second layer contains horizontal lines for rows, the third layer contains vertical lines for columns. First I sew loops hooking the anode ferrules to the horizontal lines, using the top and middle layers. Then I add the bottom layer, and sew loops hooking the cathode ferrules to the bottom layer. I position the LEDs at a 45 degree angle and space the lines accordingly.
and then you'd have to somehow bundle up the 72 wires and bring them to your driver board
Now this one is tougher. Considering I'm trying to emulate the 8x8 LED modules like the BL-M12A881UR-11 I probably have more than 72 wires. I believe I have 16 x 8 = 128 wires, which would
be an ungodly mess of individual lines. However, if I continue to think of 8x8 modules, that's only 16 lines per, maybe I could run them to perf board at the bottom edge of each segment, and then use 16 conductor ribbon cables to get to the driver board. I end up with 16 ribbons.
I have to do some more thinking about this one tho. Attaching the thread to wire wrapping wire might also work, if I again created bundles of 16 and color coded the ends.
Definitely not a beginner-friendly project!
Go big or go home.
Seriously, this is *not* a simple idea, and I expect to have to work out many problems in stages. Before I get to 8x64, I think I have to get 8x8 working. And before I get an 8x8 working, I'd better make some easier fabric-based projects. But that's part of the fun isn't it?
I'd look at either using the Flora smart pixels or the Neopixel strips
I did. They both look too big. But I'll look at them again...
And finally, thanks for the pointers about using a jig for soldering the ferrules, and *not* using my oven. If I can come up with a "10 at a time" jig that lets me solder them in say, 5 minutes (including setup time), that would be 512 / 10 * 5 / 60 = 4.27 hours of work.
-- Contemplative Mrex