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ESPtermostat.ino

@@ -60,6 +60,8 @@ void setup() {
 //========== Pin setup ==========
 
   pinMode(RELAY_PIN, OUTPUT);
+  pinMode(LED_PIN, OUTPUT);
+  digitalWrite(LED_PIN, HIGH);
 
 //========== Sensor setup ==========
 
@@ -82,6 +84,7 @@ void setup() {
   if(METRICS_EXPORT || API){
     if(METRICS_EXPORT){
       server.on("/metrics", HTTP_GET, [](AsyncWebServerRequest *request){
+          tasker.setTimeout(ledBlink, 10);
           request->send(200, "text/plain; charset=utf-8", metrics);
       });
     }
@@ -169,9 +172,13 @@ void thermostatCheck(){
 }
 
 void readSensor() {
+  float tempC = sensor.getTempCByIndex(0);
+  
+  if(tempC != DEVICE_DISCONNECTED_C){
     // read the actual temperature after it's been converted
-    temperature = sensor.getTempCByIndex(0) + CORRECTION;
+    temperature = tempC + CORRECTION;
     // do what you need with the temperature here
+  }
   metrics = "temp ";
   metrics += temperature;
 }
@@ -182,3 +189,8 @@ void startConversion() {
     // schedule reading the actual temperature in 750 milliseconds
     tasker.setTimeout(readSensor, 750);
 }
+void ledBlink() {
+    digitalWrite(LED_PIN, LOW);
+    delay(200);
+    digitalWrite(LED_PIN, HIGH);
+}

config.h.example

@@ -7,6 +7,9 @@
 
 #define RELAY_PIN 2
 
+//Light on power on, blink on request
+#define LED_PIN 1
+
 #define METRICS_EXPORT 1
 #define API 1
 #define WEBAPP 1