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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@creationix
I've got a ton of different neopixels from Adafruit for testing (including the new GRBW variants). I can get them to work on my ESP8266 as long as I knock the CPU freq down to 80Mhz. As I helped with neopixel support on nodemcu and am adding support on my own platform for esp8266, I can help with updating the code here if someone would direct me to the right place.
Also a suggestion. I bought one real espruino board (the pico) and using the SPI method I can mix GRB neopixels and GRBW neopixels just fine on the same pin. I just need need proper byte offsets in my logic. But using the esp.neopixelWrite command, I'm restricted to multiples of 3 bytes which is wrong once the 4-bytes-per-pixel GRBW hardware is introduced. We should remove that constraint.