License and small improvement for debut

hmmd-sensor-waveshare.ino

@@ -5,7 +5,7 @@
 
 // Normal mode command
 #define COMMAND "FDFCFBFA0800120000006400000004030201"
-#define PRESENCE_DISTANCE 100
+#define PRESENCE_DISTANCE 120
 #define DELAY_STATUS_CHECK 1000 // delay (in ms) between two checks of the presence
 #define POWER_DELAY 20000 // delay (in ms) until turning off the screen
 
@@ -16,6 +16,7 @@ ZigbeeOccupancySensor zbOccupancySensor = ZigbeeOccupancySensor(OCCUPANCY_SENSOR
 
 bool isPresent = false;
 unsigned long lastMotionDetected = 0; // time when the last motion was detected
+unsigned long lastCheck = 0; // time it was checked
  
 void setup() {
   initSerial();
@@ -101,6 +102,7 @@ void readAndProcessSensorLines() {
       String distanceStr = line.substring(6);
       int distance = distanceStr.toInt();
       bool currentStatus = distance <= PRESENCE_DISTANCE;
+      //Serial.println("Distance " + String(distance) + " | Status:" + String(currentStatus));
 
       if (currentStatus == 1) {
         lastMotionDetected = millis();