diff --git a/sketch-rotabators.ino b/sketch-rotabators.ino
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+++ b/sketch-rotabators.ino
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+ /*
+ * Library: https://github.com/bolderflight/MPU9250
+Basic_I2C.ino
+Brian R Taylor
+brian.taylor@bolderflight.com
+
+Copyright (c) 2017 Bolder Flight Systems
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
+and associated documentation files (the "Software"), to deal in the Software without restriction, 
+including without limitation the rights to use, copy, modify, merge, publish, distribute, 
+sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is 
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or 
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
+BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+/*
+ * Updated by Ahmad Shamshiri on July 09, 2018 for Robojax.com
+ * in Ajax, Ontario, Canada
+ * watch instrucion video for this code: 
+For this sketch you need to connect:
+VCC to 5V and GND to GND of Arduino
+SDA to A4 and SCL to A5
+
+S20A is 3.3V voltage regulator MIC5205-3.3BM5
+*/
+
+#include "MPU9250.h"
+#include "AccelStepper.h"
+
+float biai = 1.25;
+
+// an MPU9250 object with the MPU-9250 sensor on I2C bus 0 with address 0x68
+MPU9250 IMU(Wire,0x68);
+int status;
+AccelStepper stepper;
+
+void setup() {
+  // serial to display data
+  Serial.begin(115200);
+  stepper.setMaxSpeed(1700);
+  stepper.setSpeed(1700);
+  while(!Serial) {}
+
+  // start communication with IMU 
+  status = IMU.begin();
+  if (status < 0) {
+    Serial.println("IMU initialization unsuccessful");
+    Serial.println("Check IMU wiring or try cycling power");
+    Serial.print("Status: ");
+    Serial.println(status);
+    while(1) {}
+  }
+}
+
+void loop() {
+  // read the sensor
+  IMU.readSensor();
+  stepper.runSpeed();
+  // display the data
+  Serial.print("AccelX: ");
+  Serial.print(IMU.getAccelX_mss(),2);
+  Serial.print("	");
+  Serial.print("AccelY: ");  
+  Serial.print(IMU.getAccelY_mss(),2);
+  Serial.print("	");
+  Serial.print("AccelZ: ");  
+  Serial.println(IMU.getAccelZ_mss() + biai,2);
+
+  delay(200);
+} 
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