Added Piezo Buzzer Support

Adds piezo buzzer support to pin D6 to play a tone when a print is completed.

printermonitor/OctoPrintClient.cpp

@@ -237,6 +237,16 @@ void OctoPrintClient::getPrinterJobResults() {
   if (printing == "true") {
     printerData.isPrinting = true;
   } else {
+    if (printerData.isPrinting) {
+      // Print complete chime
+      tone(D6, 450);
+      delay(250);
+      noTone(D6);
+      delay(250);
+      tone(D6, 450);
+      delay(250);
+      noTone(D6);
+    }
     printerData.isPrinting = false;
   }
   printerData.toolTemp = (const char*)root2["temperature"]["tool0"]["actual"];

printermonitor/printermonitor.ino

@@ -196,7 +196,12 @@ static const char COLOR_THEMES[] PROGMEM = "<option>red</option>"
                       "<option>w3schools</option>";
                             
 
-void setup() {  
+void setup() {
+  // Play a test beep
+  tone(D6, 450);
+  delay(250);
+  noTone(D6);
+  
   Serial.begin(115200);
   SPIFFS.begin();
   delay(10);