diff --git a/src/main.cpp b/src/main.cpp
index 8bb33fd..068e984 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -16,7 +16,7 @@ const uint16_t JETSON_PORT_HB     = 14553;
 
 // ── UART vers Pi Zero ─────────────────────────────────────
 #define UART_BAUD    57600
-#define UART_RX_PIN  16
+#define UART_RX_PIN  18
 #define UART_TX_PIN  17
 
 // ── LED RGB WS2812 (GPIO48) ───────────────────────────────