diff --git a/firmware/stepper_nano_zero/board.h b/firmware/stepper_nano_zero/board.h
index d195b3e..26a5986 100644
--- a/firmware/stepper_nano_zero/board.h
+++ b/firmware/stepper_nano_zero/board.h
@@ -6,6 +6,11 @@
 //define this if you are using the Mechaduino
 //#define MECHADUINO_HARDWARE
 
+//define this if your step, dir and error input are 3.3v instead of 5v (Smoothie)
+//IMPORTANT NOTE: The pin labeled "D3" is STEP, the pin labeld "TX" is DIR and the pin labeled "RX" is ERROR.
+//The original STEP, DIR and ERROR pins will have no function
+#define USE_3_3V_SIGNAL
+
 #define NZS_FAST_CAL // define this to use 32k of flash for fast calibration table
 #define NZS_FAST_SINE //uses 2048 extra bytes to implement faster sine tables
 
@@ -44,15 +49,23 @@
 #else
 #define SerialUSB Serial
 #endif 
-
+#ifdef USE_3_3V_SIGNAL
+#define PIN_STEP_INPUT  (3) // D3
+#define PIN_DIR_INPUT   (30) // TX
+#else
 #define PIN_STEP_INPUT  (0)
 #define PIN_DIR_INPUT   (1)
+#endif
 
 #ifdef MECHADUINO_HARDWARE
 #define PIN_ERROR 		(19)  //analogInputToDigitalPin(PIN_A5))
 #else
+#ifdef USE_3_3V_SIGNAL
+#define PIN_ERROR		(31) // RX
+#else
 #define PIN_ERROR		(10)
 #endif
+#endif
 
 #define PIN_AS5047D_CS  (16)//analogInputToDigitalPin(PIN_A2))
 #ifndef MECHADUINO_HARDWARE
@@ -169,4 +182,4 @@ static void inline RED_LED(bool state)
 
 
 #endif//__BOARD_H__
-
+
diff --git a/firmware/stepper_nano_zero/stepper_controller.cpp b/firmware/stepper_nano_zero/stepper_controller.cpp
index 0a8239b..15d5203 100644
--- a/firmware/stepper_nano_zero/stepper_controller.cpp
+++ b/firmware/stepper_nano_zero/stepper_controller.cpp
@@ -401,10 +401,10 @@ void StepperCtrl::LCDShow(char *str)
 #ifdef MECHADUINO_HARDWARE //mech does not have LCD
 	return;
 #else
-	display.clearDisplay();
-	display.setTextSize(2);
+	clearAndShowHeader();
+	display.setTextSize(DISPLAY_TEXT_SIZE);
 	display.setTextColor(WHITE);
-	display.setCursor(0,0);
+	display.setCursor(0,DISPLAY_LINE(0));
 	display.println(str);
 #endif
 }
@@ -424,12 +424,12 @@ void StepperCtrl::UpdateLcd(void)
 	int32_t d;
 	bool state;
 
-	display.clearDisplay();
+	clearAndShowHeader();
 
 
 	//sprintf(str,"uSteps %d", numMicroSteps);
 
-	display.setTextSize(2);
+	display.setTextSize(DISPLAY_TEXT_SIZE);
 	display.setTextColor(WHITE);
 
 	state=TC5_ISR_Enabled;
@@ -490,7 +490,7 @@ void StepperCtrl::UpdateLcd(void)
 		sprintf(str, "%dRPM open",RPM);
 	}
 
-	display.setCursor(0,0);
+	display.setCursor(0,DISPLAY_LINE(0));
 	display.println(str);
 
 
@@ -502,7 +502,7 @@ void StepperCtrl::UpdateLcd(void)
 	y=abs(err-x*100);
 
 	sprintf(str,"%01d.%02d err", x,y);
-	display.setCursor(0,20);
+	display.setCursor(0,DISPLAY_LINE(1));
 	display.println(str);
 	//LOG("%s %d %d %d", str, err, x, y);
 	//
@@ -519,7 +519,7 @@ void StepperCtrl::UpdateLcd(void)
 
 	//LOG("deg is %d, %d, %d",deg, x, y);
 	sprintf(str,"%03d.%01ddeg", x,y);
-	display.setCursor(0,40);
+	display.setCursor(0,DISPLAY_LINE(2));
 	display.println(str);
 
 	display.display();
@@ -546,43 +546,43 @@ void StepperCtrl::menu(void)
 
 	while (!done)
 	{
-		display.clearDisplay();
-		display.setTextSize(2);
+		clearAndShowHeader();
+		display.setTextSize(DISPLAY_TEXT_SIZE);
 		display.setTextColor(WHITE);
 
 		if (menuItem==0)
 		{
 			sprintf(str,"*Run Cal");
-			display.setCursor(0,0);
+			display.setCursor(0,DISPLAY_LINE(0));
 			display.println(str);
 		}else
 		{
 			sprintf(str," Run Cal");
-			display.setCursor(0,0);
+			display.setCursor(0,DISPLAY_LINE(0));
 			display.println(str);
 		}
 
 		if (menuItem==1)
 		{
 			sprintf(str,"*Check Cal");
-			display.setCursor(0,20);
+			display.setCursor(0,DISPLAY_LINE(1));
 			display.println(str);
 		}else
 		{
 			sprintf(str," Check Cal");
-			display.setCursor(0,20);
+			display.setCursor(0,DISPLAY_LINE(1));
 			display.println(str);
 		}
 
 		if (menuItem==2)
 		{
 			sprintf(str,"*Exit");
-			display.setCursor(0,40);
+			display.setCursor(0,DISPLAY_LINE(2));
 			display.println(str);
 		}else
 		{
 			sprintf(str," Exit");
-			display.setCursor(0,40);
+			display.setCursor(0,DISPLAY_LINE(2));
 			display.println(str);
 		}
 
@@ -612,24 +612,24 @@ void StepperCtrl::menu(void)
 			switch(menuItem)
 			{
 				case 0:
-					display.clearDisplay();
-					display.setTextSize(2);
+					clearAndShowHeader();
+					display.setTextSize(DISPLAY_TEXT_SIZE);
 					display.setTextColor(WHITE);
-					display.setCursor(0,0);
+					display.setCursor(0,DISPLAY_LINE(0));
 					display.println("Running");
-					display.setCursor(0,20);
+					display.setCursor(0,DISPLAY_LINE(1));
 					display.println("Cal");
 					display.display();
 					calibrateEncoder();
 					break;
 				case 1:
 				{
-					display.clearDisplay();
-					display.setTextSize(2);
+					clearAndShowHeader();
+					display.setTextSize(DISPLAY_TEXT_SIZE);
 					display.setTextColor(WHITE);
-					display.setCursor(0,0);
+					display.setCursor(0,DISPLAY_LINE(0));
 					display.println("Testing");
-					display.setCursor(0,20);
+					display.setCursor(0,DISPLAY_LINE(1));
 					display.println("Cal");
 					display.display();
 					int32_t error,x,y,m;
@@ -637,14 +637,14 @@ void StepperCtrl::menu(void)
 					x=(error*100 *360)/ANGLE_STEPS;
 					m=x/100;
 					y=abs(x-(m*100));
-					display.clearDisplay();
-					display.setTextSize(2);
+					clearAndShowHeader();
+					display.setTextSize(DISPLAY_TEXT_SIZE);
 					display.setTextColor(WHITE);
-					display.setCursor(0,0);
+					display.setCursor(0,DISPLAY_LINE(0));
 					display.println("Error");
 
 					sprintf(str, "%02d.%02d deg",m,y);
-					display.setCursor(0,20);
+					display.setCursor(0,DISPLAY_LINE(1));
 					display.println(str);
 					display.display();
 					while (digitalRead(PIN_SW3));
@@ -669,15 +669,15 @@ void StepperCtrl::showCalError(void)
 #else
 	char str[100];
 
-	display.clearDisplay();
-	display.setTextSize(2);
+	clearAndShowHeader();
+	display.setTextSize(DISPLAY_TEXT_SIZE);
 	display.setTextColor(WHITE);
 
 	sprintf(str,"Calibration");
-	display.setCursor(0,0);
+	display.setCursor(0,DISPLAY_LINE(0));
 	display.println(str);
 	sprintf(str,"Error");
-	display.setCursor(0,20);
+	display.setCursor(0,DISPLAY_LINE(1));
 	display.println(str);
 	display.display();
 #endif
@@ -691,21 +691,48 @@ void StepperCtrl::showSplash(void)
 	char str[100];
 
 	display.clearDisplay();
-	display.setTextSize(2);
+	display.setTextSize(DISPLAY_TEXT_SIZE);
 	display.setTextColor(WHITE);
 
-	sprintf(str,"Misfit");
-	display.setCursor(0,0);
+	sprintf(str,"Misfit Tech");
+	display.setCursor(0,DISPLAY_LINE(0));
 	display.println(str);
-	sprintf(str,"Tech");
-	display.setCursor(0,20);
+  sprintf(str,"http://misfittech.net");
+  display.setCursor(0,DISPLAY_LINE(1));
+  display.println(str);
+	sprintf(str,"Nano Zero Stepper");
+	display.setCursor(0,DISPLAY_LINE(2));
 	display.println(str);
-	display.setCursor(0,40);
+	display.setCursor(0,DISPLAY_LINE(3));
 	display.println(VERSION);
 	display.display();
 #endif //no mechaduino
 }
 
+void StepperCtrl::clearAndShowHeader(void)
+{
+#ifdef MECHADUINO_HARDWARE //mech does not have LCD
+  return;
+#else
+  char str[100];
+
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(WHITE);
+
+  sprintf(str,"Misfit Tech");
+  display.setCursor(0,0);
+  display.println(str);
+  sprintf(str,"Nano Zero Stepper");
+  display.setCursor(0,8);
+  display.println(str);
+
+  
+  display.setCursor(72,0);
+  display.print(VERSION);
+#endif //no mechaduino
+}
+
 
 int StepperCtrl::begin(void)
 {
@@ -1526,4 +1553,4 @@ void StepperCtrl::printData(void)
 
 	if (state) enableTCInterrupts();
 
-}
+}
diff --git a/firmware/stepper_nano_zero/stepper_controller.h b/firmware/stepper_nano_zero/stepper_controller.h
index c34a317..23d4cd8 100644
--- a/firmware/stepper_nano_zero/stepper_controller.h
+++ b/firmware/stepper_nano_zero/stepper_controller.h
@@ -14,6 +14,14 @@
 
 #define N_DATA (1024)
 
+#define DISPLAY_TEXT_SIZE 1
+#define DISPLAY_LINE_HEIGHT (10*DISPLAY_TEXT_SIZE)
+
+// the Yellow/Blue SDD1306 has 19 pixels at the top that are for the yellow section
+#define DISPLAY_HEADER_OFFSET 19
+
+#define DISPLAY_LINE(LINENUM) (LINENUM*DISPLAY_LINE_HEIGHT)+DISPLAY_HEADER_OFFSET
+
 typedef enum {
 	CTRL_OFF =0,
 	CTRL_SIMPLE = 1, //simple error controller
@@ -89,6 +97,7 @@ class StepperCtrl
 
     //these are LCD functions
     void showSplash(void);
+    void clearAndShowHeader(void);
     void menu(void);
     void showCalError(void);
     int32_t measureMeanEncoder(void);
@@ -143,4 +152,4 @@ class StepperCtrl
 };
 
 #endif //__STEPPER_CONTROLLER_H__
-
+
diff --git a/firmware/stepper_nano_zero/stepper_nano_zero.ino b/firmware/stepper_nano_zero/stepper_nano_zero.ino
index 5523c7f..bdbdfd9 100644
--- a/firmware/stepper_nano_zero/stepper_nano_zero.ino
+++ b/firmware/stepper_nano_zero/stepper_nano_zero.ino
@@ -36,9 +36,10 @@ void setup() {
   boardSetupPins();
   int to=20;
   SerialUSB.begin(460800);
-  
+  #ifndef USE_3_3V_SIGNAL
   Serial5.begin(460800);
   SysLogInit(&Serial5,LOG_DEBUG); //use SWO for the sysloging
+  #endif
   LOG("Power up!");
   while (!SerialUSB) 
   {
@@ -51,7 +52,9 @@ void setup() {
    };     //wait for serial
 
   //return;
+  #ifndef USE_3_3V_SIGNAL
   SysLogInit(&Serial5,LOG_DEBUG); //use SWO for the sysloging
+  #endif
   LOG("SErial up!");
   SerialUSB.println("starting begin");
   stepperCtrl.begin(); //start controller before accepting step inputs
@@ -108,4 +111,4 @@ void loop() {
 		}
    
    return;
-}
+}