Control an RGB LED
Use Remocon esp32s3-ws2812, FastLED, and Bounce2. The example uses a WS2812 on GPIO48 and BOOT on GPIO0; confirm your board's wiring. Configure Wi-Fi and use the same server in the board and workbench.
Choose the RGB preset and send BINARY on #robot. The payload must be exactly four bytes: [R, G, B, unused]. For green, enter HEX 00ff0000; for red, ff000000; for off, 00000000.
This is an application protocol, not a universal IOSignal robot command. Other examples use the same channel for four-byte motor commands (directions u, l, s, r, d). Use a different tag on both sides if those devices share your server group. This sketch does not provide the CID LED UI protocol.
Inspect RX's type and length when the LED does not respond. Four text characters are not four binary color bytes.