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diff --git a/3D_Printed_Bionic_Eye/3D_Printed_Bionic_Eye.ino b/3D_Printed_Bionic_Eye/3D_Printed_Bionic_Eye.ino
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+/*******************************************************************
+  Bionic Eye sketch for Adafruit Trinket.  
+
+  by Bill Earl
+  for Adafruit Industries
+ 
+  Required library is the Adafruit_SoftServo library
+  available at https://github.com/adafruit/Adafruit_SoftServo
+  The standard Arduino IDE servo library will not work with 8 bit
+  AVR microcontrollers like Trinket and Gemma due to differences
+  in available timer hardware and programming. We simply refresh
+  by piggy-backing on the timer0 millis() counter
+ 
+  Trinket:        Bat+    Gnd       Pin #0  Pin #1
+  Connection:     Servo+  Servo-    Tilt    Rotate
+                  (Red)   (Brown)   Servo   Servo
+                                    (Orange)(Orange)
+ 
+ *******************************************************************/
+ 
+#include <Adafruit_SoftServo.h>  // SoftwareServo (works on non PWM pins)
+ 
+#define TILTSERVOPIN 0    // Servo control line (orange) on Trinket Pin #0
+#define ROTATESERVOPIN 1  // Servo control line (orange) on Trinket Pin #1
+ 
+Adafruit_SoftServo TiltServo, RotateServo;  //create TWO servo objects
+   
+void setup() 
+{
+  // Set up the interrupt that will refresh the servo for us automagically
+  OCR0A = 0xAF;            // any number is OK
+  TIMSK |= _BV(OCIE0A);    // Turn on the compare interrupt (below!)
+  
+  TiltServo.attach(TILTSERVOPIN);   // Attach the servo to pin 0 on Trinket
+  RotateServo.attach(ROTATESERVOPIN);   // Attach the servo to pin 1 on Trinket
+  delay(15);                    // Wait 15ms for the servo to reach the position
+}
+ 
+void loop()  
+{
+  delay(100);  
+  TiltServo.detach();   // release the servo
+  RotateServo.detach();   // release the servo
+ 
+  if(random(100) > 80)  // on average, move once every 500ms
+  {
+    TiltServo.attach(TILTSERVOPIN);   // Attach the servo to pin 0 on Trinket
+    TiltServo.write(random(120, 180));    // Tell servo to go to position
+  }
+  if(random(100) > 90)  // on average, move once every 500ms
+  {
+    RotateServo.attach(ROTATESERVOPIN);   // Attach the servo to pin 1 on Trinket
+    RotateServo.write(random(0, 180));    // Tell servo to go to position
+  }
+}
+ 
+// We'll take advantage of the built in millis() timer that goes off
+// to keep track of time, and refresh the servo every 20 milliseconds
+// The SIGNAL(TIMER0_COMPA_vect) function is the interrupt that will be
+// Called by the microcontroller every 2 milliseconds
+volatile uint8_t counter = 0;
+SIGNAL(TIMER0_COMPA_vect) 
+{
+  // this gets called every 2 milliseconds
+  counter += 2;
+  // every 20 milliseconds, refresh the servos!
+  if (counter >= 20) 
+  {
+    counter = 0;
+    TiltServo.refresh();
+    RotateServo.refresh();
+  }
+}
\ No newline at end of file
diff --git a/3D_Printed_Bionic_Eye/3D_Printed_Bionic_Eye.py b/3D_Printed_Bionic_Eye/3D_Printed_Bionic_Eye.py
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+++ b/3D_Printed_Bionic_Eye/3D_Printed_Bionic_Eye.py
@@ -0,0 +1,24 @@
+# Laser Dog Goggles
+# https://learn.adafruit.com/laser-dog-goggles
+
+import time
+import board
+import pulseio
+from adafruit_motor import servo
+
+# servo pin for the M0 boards:
+pwm = pulseio.PWMOut(board.A2, duty_cycle=2 ** 15, frequency=50)
+my_servo = servo.Servo(pwm)
+speed = .04     # 40ms lower value means faster movement
+max_turn = 180  # rotation range 180 degree, half a circle
+
+while True:
+    # move stepper max_turn degrees clockwise
+    for angle in range(0, max_turn, 1):
+        my_servo.angle = angle
+        time.sleep(speed)
+
+    # move stepper max_turn degrees counter clockwise
+    for angle in range(max_turn, 0, -1):
+        my_servo.angle = angle
+        time.sleep(speed)
diff --git a/3D_Printed_Bionic_Eye/README.md b/3D_Printed_Bionic_Eye/README.md
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+++ b/3D_Printed_Bionic_Eye/README.md
@@ -0,0 +1,4 @@
+# 3D_Printed_Bionic_Eye
+
+Code to accompany this Adafruit tutorial:
+https://learn.adafruit.com/3d-printed-bionic-eye