Leaderboard

According to adafruit, there are at least two LEDs with different names that use the same controller (or an equivalent). I think they should work; you should choose the 5mm LED as 8mm is too large. At some point I will sell the PCBs to suit (don't buy Sparkfun PCBs unless you want to use common RGB LEDs), price should be about 8 EUR. If you read through TK.'s code example on svnmios32, he states that driving the LEDs takes up quite a bit of memory but not too much CPU overhead. There is a limit in the chain length in order to guarantee data transmission. I'm pretty sure that the controllers hold the colour value and new data is only required for updates. The advantage of shift registers is the parallel data transmission which allows for a simple serial stream to rapidly clock multiple lines. Disadvantages are the complicated PCB and software matrices, but it does work (BLM 16*16+X). Bon weekend,

Works well! (at least the LED part). Encoders are up next.