Compared to the original #192:LED design. Nearly everything did change
- smaller: 15.8mm x 14.6mm
- No complicated Multiplexing anymore! LEDs are WS2812 style ones in a metric 1515 package
- smarter: MCU is a SAMD21
- USB: quite more convienat and easier to connect
- Bootloader is same as on Adafruit's Trinket M0
- Easy Arduino IDE support
- Easy Circuit Phython support
- Using of Adafruits's Neopixel Library
- Programming and Powering via USB
This is really cool! I'm curious, strips of similar LEDs typically have a capacitor per pixel or two, but you don't seem to be using any. Is it really not necessary? Also curious how you did the surface mount on both sides! I'm close to assembling a stand-alone game console with 10x20 display using WS2812-2020s. But now that I know these 1515s exist, I already want to make a new version! And if I didn't need all those capacitors, that would be great too...