-
I guess you can just pick any pin that's free (for the dongle, maybe one that's on a pad underneath so you don't accidentally use it?)
I never used neopixels so don't know what
-DNEOPIXEL_LRCK_PIN=23
does and what this LRCK pin is used for. It is not good idea if it outputs low - that will reset the dongle. Was thinking you really use it for something and connect it to the leds - so not sure what "don't accidentally use it" means :-)
In this case, http://forum.espruino.com/comments/15562682/ and building the hex file with this board def works for me
Edit: just saw that fanoush mentioned it's not a good idea. I guess you can just pick any pin that's free (for the dongle, maybe one that's on a pad underneath so you don't accidentally use it?)