diff --git a/arduino/i2c_slave_with_sensor_reading.ino b/arduino/i2c_slave_with_sensor_reading.ino
new file mode 100644
index 00000000..c3e97ae1
--- /dev/null
+++ b/arduino/i2c_slave_with_sensor_reading.ino
@@ -0,0 +1,73 @@
+#include <Wire.h>
+#define REGISTER_0 0x00
+#define REGISTER_1 0x01
+#define REGISTER_2 0x02
+#define REGISTER_3 0x03
+#define I2C_ADDRESS_SELF 0x4B
+
+unsigned int reg_0_value = 41151;  
+unsigned int reg_1_value = 0;
+unsigned int reg_2_value = 0;
+unsigned int reg_3_value = 0;
+
+uint8_t master_reg; // I2C master read register
+uint8_t slave_reg; // I2C slave read register
+
+void setup()
+{
+  Serial.begin(9600); //Begins Serial communication
+  Serial.println("Setup for sensor");
+
+  Wire.begin(I2C_ADDRESS_SELF);        // join i2c bus
+  Wire.setClock(400000); // set I2C clock for full speed
+  Serial.begin(9600);  // start serial for output
+  digitalWrite(A4, LOW); 
+  digitalWrite(A5, LOW);
+  Wire.onRequest(requestEvent);
+  Wire.onReceive(receiveEvent);
+  pinMode(LED_BUILTIN, OUTPUT);
+  Serial.println("Starting");
+}
+
+void loop()
+{
+  delay(1000);
+  
+  Serial.println("Read sensor value");
+  
+  reg_0_value = 1;  // set register 0 value to the sensor value
+  reg_1_value += 1;  // increment a count of how many values read
+}
+
+void receiveEvent(int bytes) {
+  // Slave reads the first byte to determine which register is concerned
+  slave_reg = Wire.read();
+    Serial.print("Slave read register ");
+    Serial.println(slave_reg);
+}
+
+void requestEvent() {
+  // Slave uses the the register variable to know what to send back
+  digitalWrite(LED_BUILTIN, HIGH);
+  if (slave_reg == REGISTER_0) {
+    Wire.write((uint8_t *)&reg_0_value, sizeof(reg_0_value));
+    Serial.print("Slave writing value ");
+    Serial.println(reg_0_value);
+  } else if (slave_reg == REGISTER_1) {
+    Wire.write((uint8_t *)&reg_1_value, sizeof(reg_1_value));
+    Serial.print("Slave writing value ");
+    Serial.println(reg_1_value);
+  } else if (slave_reg == REGISTER_2) {
+    Wire.write((uint8_t *)&reg_2_value, sizeof(reg_2_value));
+    Serial.print("Slave writing value ");
+    Serial.println(reg_2_value);
+  } else if (slave_reg == REGISTER_3) {
+    Wire.write((uint8_t *)&reg_3_value, sizeof(reg_3_value));
+    Serial.print("Slave writing value ");
+    Serial.println(reg_3_value);
+  } else {
+    Serial.println("Slave unknown register");
+  }
+  delay(50);
+  digitalWrite(LED_BUILTIN, LOW);
+}