diff --git a/ino/contact_printer/ContactPrinter.h b/ino/contact_printer/ContactPrinter.h
index 589d86b..42c13fb 100644
--- a/ino/contact_printer/ContactPrinter.h
+++ b/ino/contact_printer/ContactPrinter.h
@@ -16,6 +16,7 @@ class ContactPrinter {
 	const uint16_t serial_delay = 5;
 	const uint16_t baud = 115200;
 
+	/* PINS */
 	const uint8_t takeup_picture_pin_enable = 23;
 	const uint8_t takeup_picture_pin_cw = 22;
 	const uint8_t takeup_picture_pin_ccw = 21;
@@ -24,13 +25,16 @@ class ContactPrinter {
 	const uint8_t takeup_stock_pin_cw = 18;
 	const uint8_t takeup_stock_pin_ccw = 5;
 
-	const uint8_t start_button_pin = 34;
+	const uint8_t start_button_pin = 17;
 
+	/* MOTOR PWM */
 	const uint32_t pwm_frequency = 30000;
 	const uint8_t takeup_picture_pwm_channel = 1;
 	const uint8_t takeup_stock_pwm_channel = 2;
 	const uint8_t pwm_resolution = 8;
 
+	/* MEMORY */
+
 	volatile long timer = 0;
 
 	volatile float drive_speed = 1.0;  //calculated rpm
diff --git a/ino/contact_printer/DriveMotor.h b/ino/contact_printer/DriveMotor.h
index 31008ef..b074efe 100644
--- a/ino/contact_printer/DriveMotor.h
+++ b/ino/contact_printer/DriveMotor.h
@@ -9,8 +9,8 @@ class DriveMotor {
 
 	//defaults are for EPS32 dev board
 	volatile uint8_t enable_pin = 13;
-	volatile uint8_t forward_pin = 12;
-	volatile uint8_t backward_pin = 14;
+	volatile uint8_t forward_pin = 12; //Clockwise
+	volatile uint8_t backward_pin = 14; //Counter-clockwise
 	volatile uint8_t encoder_a_pin = 27;
 	volatile uint8_t encoder_b_pin = 26;
 
diff --git a/ino/contact_printer/contact_printer.ino b/ino/contact_printer/contact_printer.ino
index e465cc6..dff2834 100644
--- a/ino/contact_printer/contact_printer.ino
+++ b/ino/contact_printer/contact_printer.ino
@@ -23,7 +23,7 @@
  * 27 Drive Encoder A
  * 26 Drive Encoder B
  * 
- * 34 Start Button
+ * 17 Start Button
  * 
  * 33 Lamp
  *