You are reading a single comment by @Kalus and its replies.
Click here to read the full conversation.
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.
@Kalus
No firmware issue. Changed the wiring and it works. DrAzzy might got the cause (but brightness was meaningless, therefore i hadn't guessed a hardware concern).
I was using a bare WS2812 (6pin 5050) without cap. The curious issue occurs having
WS2812.VCC and WS2812.VDD wired to the voltage Espruino.Bat .
Now i had changed only WS2812.VCC to Espruino.3.3 and the issue has gone.
Thank you and sorry guys.