diff --git a/src/main.cpp b/src/main.cpp
index fb9543c..56942ba 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -302,7 +302,7 @@ void timer() {
 			sprintf(t_stat[r], "off");
 			if (!override[r]) {
 				digitalWrite(pins[r], LOW);
-				analogWrite(LED_BUILTIN, 0);	 // LED
+				analogWrite(LED_BUILTIN_AUX, 0); // LED
 				if (strcmp(stat[r], "AN") == 0) {
 					debug(r);
 					debugln(F(" is off"));
@@ -314,6 +314,19 @@ void timer() {
 	}
 }
 
+uint ledBrightness = 0;
+int ledBrightnessStep = 20;
+uint lastLedCycle;
+void pulseLed() {
+	if (millis() - lastLedCycle > 100) {
+		analogWrite(LED_BUILTIN_AUX, ledBrightness);
+		ledBrightness += ledBrightnessStep;
+		if (ledBrightness <= 0 || ledBrightness >= 255) {
+			ledBrightnessStep = -ledBrightnessStep;
+		}
+		lastLedCycle = millis();
+	}
+}
 
 void emergencyStop() {
 	for (uint pin = 0; pin < sizeof(pins) / sizeof(pins[0]); pin++) {
@@ -328,10 +341,13 @@ void emergencyStop() {
 	unsigned long lastTry = millis();
 	while (millis() - lastTry < (1000 * 60)) {
 		analogWrite(LED_BUILTIN, 255);
+		analogWrite(LED_BUILTIN_AUX, 0);
 		delay(125);
 		analogWrite(LED_BUILTIN, 0);
+		analogWrite(LED_BUILTIN_AUX, 255);
 		delay(125);
 		analogWrite(LED_BUILTIN, 255);
+		analogWrite(LED_BUILTIN_AUX, 255);
 		delay(250);
 	}
 	ESP.restart();
@@ -350,7 +366,9 @@ void getCurrentTemperature() {
 
 void setup() {
 	pinMode(LED_BUILTIN, OUTPUT);
+	pinMode(LED_BUILTIN_AUX, OUTPUT);
 	analogWrite(LED_BUILTIN, 255);
+	analogWrite(LED_BUILTIN_AUX, 255);
 	uint p = 0;
 	while (p <= sizeof(pins) / sizeof(pins[0])) {
 		pinMode(pins[p], OUTPUT);
@@ -379,6 +397,7 @@ void setup() {
 	while (WiFi.status() != WL_CONNECTED) {
 		delay(250);
 		debug(F("."));
+		analogWrite(LED_BUILTIN_AUX, 255 * (notConnectedCounter % 2)); // LED
 		notConnectedCounter++;
 		if (notConnectedCounter >
 			(1000 / 250) * 15) { // Reset board if not connected after 15s
@@ -386,6 +405,7 @@ void setup() {
 			ESP.restart();
 		}
 	}
+	analogWrite(LED_BUILTIN_AUX, 0);
 	debug(F("\nConnected to "));
 	debugln(WiFi.SSID());
 	debug(F("IP address: "));
@@ -431,4 +451,5 @@ void loop() {
 	delay(50);
 	events();
 	ArduinoOTA.handle();
+	pulseLed();
 }