diff --git a/src/driver/drv_tuyaMCU.c b/src/driver/drv_tuyaMCU.c
index 29d96697b..eb7de6880 100644
--- a/src/driver/drv_tuyaMCU.c
+++ b/src/driver/drv_tuyaMCU.c
@@ -573,6 +573,10 @@ void TuyaMCU_SendHexString(uint8_t id, char data[]) {
 }
 
 void TuyaMCU_SendString(uint8_t id, char data[]) {
+	if (g_tuyaMCUpayloadBuffer == 0) {
+		// TuyaMCU not ran
+		return;
+	}
 	uint16_t len = strlen(data);
 	uint16_t payload_len = 4 + len;
 	g_tuyaMCUpayloadBuffer[0] = id;
diff --git a/src/driver/drv_tuyaMCUPixLED.c b/src/driver/drv_tuyaMCUPixLED.c
index a065e9e17..4dd78d41d 100644
--- a/src/driver/drv_tuyaMCUPixLED.c
+++ b/src/driver/drv_tuyaMCUPixLED.c
@@ -15,10 +15,14 @@ int g_numLEDs = 0;
 byte *g_ledStates;
 int g_id_states = 104;
 
+void TuyaMCU_SendString(uint8_t id, char data[]);
+
 // startDriver tmPixLED
 void TuyaMCU_PixelLED_Init() {
 	g_numLEDs = Tokenizer_GetArgIntegerDefault(1, 12);
-	g_ledStates = (byte*)malloc(g_numLEDs);
+	g_id_states = Tokenizer_GetArgIntegerDefault(2, 104);
+	g_ledStates = (byte*)malloc(g_numLEDs); 
+	memset(g_ledStates, 0, g_numLEDs);
 }
 void TuyaMCU_PixelLED_SetOnOff() {
 	char tmp[32];