diff --git a/platformio.ini b/platformio.ini
index b92ae84..6e6237a 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -18,9 +18,7 @@ monitor_speed = 115200
 lib_deps =
   439 #ID of Lightsensor library BH1750 
   19 #DHT sensor library 
-  ; 31 #Adafruit Unified Sensor
   AutoConnect@^1.1.7
-  AsyncMqttClient@^0.8.2
   ArduinoJson@^6.15.2
   PubSubClient@^2.8
   ArduinoNvs@^2.5
diff --git a/src/capacitiveSoilMoistureSensor.cpp b/src/capacitiveSoilMoistureSensor.cpp
index de72e0d..9eb0ce0 100644
--- a/src/capacitiveSoilMoistureSensor.cpp
+++ b/src/capacitiveSoilMoistureSensor.cpp
@@ -5,19 +5,22 @@
 
 const int numReadings = 20;
 
+// reads soil moisture multiple times and calculates average to eliminate noise
 int readCapacitiveSoilMoistureSensor() {
   int total = 0;  // the running total
-  // read from the sensor:
+  // read from the sensor
   for (int readIndex = 0; readIndex < numReadings; readIndex++) {
     total = total + analogRead(PIN_MS);
     delay(2);
   }
   int measurement = total / numReadings;
 
+  // map measurement to relative soil moisture value in %
   int finalRes = map(measurement, VALUE_AIR, VALUE_WATER, 0, 100);
   Serial.print("current soil moisture: ");
   Serial.println(finalRes);
 
+  // clamp mesurement to a value between 0 and 100
   if (finalRes < 0) {
     return 0;
   } else if (finalRes > 100) {
diff --git a/src/connections.cpp b/src/connections.cpp
index f26ba73..f345a6c 100644
--- a/src/connections.cpp
+++ b/src/connections.cpp
@@ -120,7 +120,7 @@ void onMqttMessage(char *topic, byte *payload, unsigned int payload_length) {
   Serial.println();
 
   if (strcmp(topic, MQTT_LIGHT_PROPERTIES) == 0) {
-    Serial.println("receiving light treshold...");
+    Serial.println("receiving light threshold...");
     Serial.println(topic);
     StaticJsonDocument<1024> doc;
     DeserializationError err = deserializeJson(doc, payload);