diff --git a/esp32h2_water_temp_pump/esp32h2_water_temp_pump.ino b/esp32h2_water_temp_pump/esp32h2_water_temp_pump.ino
index e8037eb..fd20517 100644
--- a/esp32h2_water_temp_pump/esp32h2_water_temp_pump.ino
+++ b/esp32h2_water_temp_pump/esp32h2_water_temp_pump.ino
@@ -32,9 +32,13 @@
 
 #include "Zigbee.h"
 #include <OneWireESP32.h>
+#include <FastLED.h>
 
 #define TEMP_PIN 10
 #define PUMP_PIN 13
+#define LED_PIN 8
+
+CRGB leds[1];
 
 /* Zigbee temperature sensor configuration */
 #define ANALOG_DEVICE_ENDPOINT_NUMBER 1
@@ -60,6 +64,11 @@ static float get_temp(int gpio) {
 
   uint8_t devices = ds.search(addr, MaxDevices);
 
+  Serial.printf("Number of devices: %d\r\n", devices);
+
+  ds.request();
+	vTaskDelay(800 / portTICK_PERIOD_MS);
+  
   for (int i = 0; i < devices; i++) {
     uint8_t err = ds.getTemp(addr[i], temp[i]);
     if (err) {
@@ -67,12 +76,13 @@ static float get_temp(int gpio) {
       Serial.print(i);
       Serial.print(": ");
       Serial.println(errt[err]);
+      return err;
     } else {
       avg += temp[i];
       num += 1;
     }
   }
-  if (num == 0) return -10.0;
+  if (num == 0) return -100.0;
   return avg / num;
 }
 
@@ -81,11 +91,13 @@ static float get_temp(int gpio) {
 static void temp_sensor_value_update(void *arg) {
   for (;;) {
     // Read temperature sensor value
-    float tsens_value = temperatureRead();
-    // float tsens_value = get_temp(TEMP_PIN);
-    Serial.printf("Updated temperature sensor value to %.2f°C\r\n", tsens_value);
+    // float tsens_value = temperatureRead();
+    float tsens_value = get_temp(TEMP_PIN);
+
     // Update temperature value in Temperature sensor EP
-    zbTempSensor.setTemperature(tsens_value);
+    if(tsens_value > -50.0 && tsens_value < 150.0) {
+      zbTempSensor.setTemperature(tsens_value);
+    }
 
     // check temp and control pump
     if (tsens_value >= zbAnalogTemp.getAnalogOutput() + 5.0 || tsens_value < 0) {  // < 0 for safety if value is uninitialized
@@ -102,11 +114,17 @@ static void temp_sensor_value_update(void *arg) {
 
 /********************* Arduino functions **************************/
 void setup() {
-  Serial.begin(115200);
+  FastLED.addLeds<NEOPIXEL, LED_PIN>(leds, 1);
+  leds[0] = CRGB::Red; FastLED.show();
 
   // Init button switch
   pinMode(button, INPUT_PULLUP);
   pinMode(PUMP_PIN, OUTPUT);
+  digitalWrite(PUMP_PIN, HIGH); // default to high just in case
+
+  Serial.begin(115200);
+  // while(!Serial);
+  leds[0] = CRGB::Orange; FastLED.show();
 
   // actual temp given by the thermometer
   zbTempSensor.setManufacturerAndModel("ESP32H2", "Furnace Pump");
@@ -125,6 +143,7 @@ void setup() {
   Zigbee.addEndpoint(&zbTempSensor);
   Zigbee.addEndpoint(&zbAnalogTemp);
 
+  leds[0] = CRGB::Yellow; FastLED.show();
 
   Serial.println("Starting Zigbee...");
   // When all EPs are registered, start Zigbee in End Device mode
@@ -135,6 +154,9 @@ void setup() {
   } else {
     Serial.println("Zigbee started successfully!");
   }
+  
+  leds[0] = CRGB::Green; FastLED.show();
+  
   Serial.println("Connecting to network");
   while (!Zigbee.connected()) {
     Serial.print(".");
@@ -142,6 +164,8 @@ void setup() {
   }
   Serial.println();
 
+  leds[0] = CRGB::Blue; FastLED.show();
+
   // Optional: If time cluster is added, time can be read from the coordinator
   timeinfo = zbTempSensor.getTime();
   timezone = zbTempSensor.getTimezone();
@@ -157,6 +181,7 @@ void setup() {
 
   // Start Temperature sensor reading task
   xTaskCreate(temp_sensor_value_update, "temp_sensor_update", 3072, NULL, 10, NULL);
+  leds[0] = CRGB::White; FastLED.show();
 
   // Set reporting interval for temperature measurement in seconds, must be called after Zigbee.begin()
   // min_interval and max_interval in seconds, delta (temp change in 0,1 °C)
@@ -165,6 +190,9 @@ void setup() {
   // if min = 0, max = 10 and delta = 0, reporting is sent every 10 seconds regardless of temperature change
   zbTempSensor.setReporting(10, 300, 1);
   zbAnalogTemp.setAnalogOutput(60.0);  // starting default value
+
+  leds[0] = CRGB::Black; FastLED.show();
+
 }
 
 void loop() {