diff --git a/Week3_ZigBee/Week3_ZigBee.ino b/Week3_ZigBee/Week3_ZigBee.ino
new file mode 100644
index 0000000..79c58f5
--- /dev/null
+++ b/Week3_ZigBee/Week3_ZigBee.ino
@@ -0,0 +1,17 @@
+int val;
+int tempPin = 1;
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+}
+
+void loop() {
+  val = analogRead(tempPin);
+  float mv = ( val/1024.0)*5000; 
+  float cel = mv/10;
+
+  Serial.print("SN TEMP ");
+  Serial.println(cel, 4);
+  delay(5000);
+}