diff --git a/compiled/due/firmware.bin b/compiled/due/firmware.bin
index 2ba0647..ec96918 100755
Binary files a/compiled/due/firmware.bin and b/compiled/due/firmware.bin differ
diff --git a/compiled/lighthub21/firmware.bin b/compiled/lighthub21/firmware.bin
index cec85bc..5c0d3ad 100644
Binary files a/compiled/lighthub21/firmware.bin and b/compiled/lighthub21/firmware.bin differ
diff --git a/lighthub/main.cpp b/lighthub/main.cpp
index ed85ab2..1744ec4 100644
--- a/lighthub/main.cpp
+++ b/lighthub/main.cpp
@@ -1609,7 +1609,7 @@ void postTransmission() {
     #endif
 }
 
-#define TIMER_INTERVAL_MS        200      // 0.1s = 100ms
+
 
 volatile unsigned long timerCount=0; 
 volatile int16_t timerNumber=-1;
@@ -2074,8 +2074,10 @@ void modbusIdle(void) {
 #endif
 }
 
+volatile bool inputLoopBusy = false;
 void inputLoop(short cause) {
-    if (!inputs) return;
+    if (!inputs || inputLoopBusy) return;
+inputLoopBusy = true;
 
 configLocked++;
     //if (millis() > timerInputCheck) 
@@ -2129,6 +2131,7 @@ configLocked++;
         timerSensorCheck = millis();// + INTERVAL_CHECK_SENSOR;
     }
 configLocked--;
+inputLoopBusy= false;
 }
 
 
@@ -2145,7 +2148,7 @@ configLocked++;
             input = input->next;
         }
     // Interval in microsecs
-    attachTimer(TIMER_INTERVAL_MS * 1000, TimerHandler, "ITimer");  
+    attachTimer(TIMER_CHECK_INPUT * 1000, TimerHandler, "ITimer");  
     #endif     
 configLocked--;
 }
diff --git a/lighthub/options.h b/lighthub/options.h
index 3c650a6..78c73ac 100644
--- a/lighthub/options.h
+++ b/lighthub/options.h
@@ -100,9 +100,12 @@
 */
 
 #ifndef INTERVAL_CHECK_INPUT
-#define INTERVAL_CHECK_INPUT  15
+#define INTERVAL_CHECK_INPUT  11
 #endif
 
+#ifndef TIMER_CHECK_INPUT
+#define TIMER_CHECK_INPUT  15
+#endif
 #ifndef INTERVAL_CHECK_SENSOR
 #define INTERVAL_CHECK_SENSOR  5000
 #endif