Shen - Hello,I've a nullbit tidbit with a "Ke...

Hello, I've a nullbit tidbit with a "Key Micro” Atmega MCU. I'm trying do install by RGB underglow, it's not a success ... 😦 I've no led at all. I've tried to: - "ping" grd on each led - use this schematic and try each in/out - double check "RGBLIGHT_ENABLE = yes" in rules.mk - wired the first LED to B2 and change RGB_DI_PIN Everything is "ok" My guess was that the first one has an issue, I've replaced it just to be sure ... but I can "ping" correctly to the micro controller. Do I need a resistor? I don't have other idea right now 😦 Thank you very much,