PaulRB:
Why not save yourself all the problems...?
Because I didn't know that thing existed. Two chips sounds like hard work, so the HT it is. I've no idea how it works of course...but then yesterday I didn't know how the 7-segment 3 digit dispaly worked either.
So questions;
Is there a different version of the driver chip for common anode/common cathode displays?
er...and actually that's it for now.
Except...my circuit as posted...if I don't copnnect the 144 WS2812B LEDs, the potentiometer goes 0 to 1023, which I divide by 2.5 to convert to 0-255.
With the LEDs connected, it only goes 0-244. I assume that the Mega is not providing enough power to run everything...
...so I took the +5v and GND line fro the WS2812bs and powered them, from my bench power supply.
Given the sketch only gives the option of being red (from 0 to 255)....they did a very god disco ball impression...lots of multicoloured flashing. There's obviously some reason why what I did is a really bad idea.
Anyone care to enlighten me?