digitalPulse "Timeout on Utility Timer"

The neopixel module for ESP8266 does a dry-run/pre-roll without emitting any pulses. That dry run is necessary to load the machine code from flash into RAM. Without this dry run the timing of the pules representing the first byte won't have proper timing

Hi @maze1980, are you talking about this section?

https://github.com/espruino/Espruino/blob/e568c6c7ac78e81b4ab40bb28bd92e8052f4e7b6/libs/neopixel/jswrap_neopixel.c#L229-L234