diff --git a/src/led.cpp b/src/led.cpp
index 17b1b07..dc3b130 100644
--- a/src/led.cpp
+++ b/src/led.cpp
@@ -71,6 +71,78 @@ void setAllLeds( bool state)
   }
 }
 
+uint32_t lasttime = 0;
+bool laststate = false;
+
+void blinkAllLeds(void)
+{
+  uint32_t timeNow = millis();
+  if(timeNow - lasttime > BLINKINTERVAL)
+  {
+    if(laststate)
+    {
+      turnOnAllLed();
+      laststate = false;
+    }
+    else
+    {
+      turnOffAllLed();
+      laststate = true;
+    }
+    lasttime = timeNow;
+  }
+}
+
+void blinkLed(e_ledcolor blinkled)
+{
+  uint32_t timeNow = millis();
+  if(timeNow - lasttime > BLINKINTERVAL)
+  {
+    if(laststate)
+    {
+      turnOnLed(blinkled);
+      laststate = false;
+    }
+    else
+    {
+      turnOffLed(blinkled);
+      laststate = true;
+    }
+    lasttime = timeNow;
+  }
+}
+//e_ledcolor lastLed = e_ledcolor::YELLOW;
+
+// void runningLeds(void)
+// {
+//     uint32_t timeNow = millis();
+//   if(timeNow - lasttime > BLINKINTERVAL)
+//   {
+//     switch (lastLed)
+//     {
+//     case e_ledcolor::YELLOW:
+//       turnOffAllLed();
+//       turnOnLed(YELLOW);
+//       lastLed = e_ledcolor::RED;
+//       break;
+//     case e_ledcolor::RED:
+//       turnOffAllLed();
+//       turnOnLed(RED);
+//       lastLed = e_ledcolor::GREEN;
+//       break;
+//     case e_ledcolor::GREEN:
+//       turnOffAllLed();
+//       turnOnLed(GREEN);
+//       lastLed = e_ledcolor::YELLOW;
+//       break;
+//     default:
+//       break;
+//     }
+//     lasttime = timeNow;
+
+//   }
+// }
+
 //#############################################
 //#            leds functions                 #
 //#############################################
diff --git a/src/led.h b/src/led.h
index c393a64..a900470 100644
--- a/src/led.h
+++ b/src/led.h
@@ -5,6 +5,8 @@
 #include "vector"
 #include "board.h"
 
+#define BLINKINTERVAL 200
+
 enum e_ledcolor
 {
   YELLOW,
@@ -97,6 +99,8 @@ void turnOnLed(uint16_t index);
 void turnOffAllLed(void);
 void turnOnAllLed(void);
 void setAllLeds( bool state);
+void blinkAllLeds(void);
+void blinkLed(e_ledcolor blinkled);
 
 
 #endif //LEDH