/diy/ - Do It Yourself

i made an esp8266 rgb led panel controller board. it's perfect for my application, but it's abusing two shift registers as level shifting and i/o expansion, which means the SPI is chugging away at 80MHz and just barely managing a 30Hz refresh rate with 9 equiv. bits of color depth. kind of funny but in (sober) hindsight should have wired the outputs differently to allow faster refreshing in case i ever wanted to show a proper image with more depth.