diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 4fbe8b766..62b322a38 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -112,6 +112,8 @@ static uint8_t s_led_state = 1;
     ESP32-C3 Blue board MAC:    54:32:04:46:71:80
     ESP32-C3 SuperMini MAC:     34:b7:da:f9:33:8d
     ESP32-C3 Breadboard MAC:    e4:b0:63:17:9e:45
+
+    ESP32-C3 Breadboard 2 MAC:  9c:9e:6e:14:b5:54
 */
 static uint8_t broadcast_mac[ESP_NOW_ETH_ALEN] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 //static uint8_t broadcast_mac[ESP_NOW_ETH_ALEN]  = {0x54, 0x32, 0x04, 0x46, 0x71, 0x80};     // MAC address of troubleshooting Dev board