8x8x8 cube? Straight in the deep end there.
Would be more difficult I think as you're effectively soldering the LEDs in mid-air. Soldering a cap into a circuit board is easier as both legs are effectively tethered.
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PS > And another thing! Will the Ti|3 have user customisable/importable wavetables?
A ribbon-controller or XY-Pad might be nice, too, please! Thanks!