diff --git a/src/main.cpp b/src/main.cpp
index eac9bf9..ff2c9e3 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -182,8 +182,7 @@ struct sensordata
   struct sensordata dataTCS34725_colortemp;
   uint16_t value_colortemp, value_tcs_lux, value_tcs_r,value_tcs_g,value_tcs_b,value_tcs_c;
   unsigned long lastread_tcs34725=0;
-
-  
+  #define TCS34725_MINLUXFORCT 30 //send only colortemperature values if lux is at least this high
 #endif
 
 #ifdef SENSOR_ANEMOMETER
@@ -912,7 +911,11 @@ void loop_TCS34725_colortemp()
     checkESPStatus();
 
     Homie.getLogger() << "colortemp tcs " << ": " << value_colortemp << endl;
-    sensorNode.setProperty("colortemp").send(String(value_colortemp));
+    if (tcs.lux>=TCS34725_MINLUXFORCT) {
+      sensorNode.setProperty("colortemp").send(String(value_colortemp));
+    }else{
+      Homie.getLogger() << "didn't send tcs because light too low: " << tcs.lux << "lux" << endl;
+    }
         
     d.lastsentvalue=value_colortemp;