diff --git a/ESP32_CAN_Logger.ino b/ESP32_CAN_Logger.ino
index 2013f47..5c76891 100644
--- a/ESP32_CAN_Logger.ino
+++ b/ESP32_CAN_Logger.ino
@@ -103,9 +103,13 @@ const char* canSpeedNames[] = {"125K", "250K", "500K", "1M"};
 CAN_SPEED canSpeedValues[] = {CAN_125KBPS, CAN_250KBPS, CAN_500KBPS, CAN_1000KBPS};
 
 // 실시간 모니터링용
-#define RECENT_MSG_COUNT 50
-CANMessage recentMessages[RECENT_MSG_COUNT];
-uint8_t recentMsgIndex = 0;
+#define RECENT_MSG_COUNT 100
+struct RecentCANData {
+    CANMessage msg;
+    uint32_t count;  // 실제 수신 횟수
+} recentData[RECENT_MSG_COUNT];
+
+int recentDataIndex = 0;
 uint32_t totalMsgCount = 0;
 uint32_t msgPerSecond = 0;
 uint32_t lastMsgCountTime = 0;