diff --git a/software/firmware_module/module_rev0/src/global.h b/software/firmware_module/module_rev0/src/global.h
new file mode 100644
index 0000000..72f5d4f
--- /dev/null
+++ b/software/firmware_module/module_rev0/src/global.h
@@ -0,0 +1,33 @@
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+
+// I/O Pin definition
+#define BUX_RX PD0
+#define BUX_TX PD1
+#define BUX_DIR PD2
+#define SENSOR_HOME PD3
+
+#define MOTOR_A PC0
+#define MOTOR_B PC1
+#define MOTOR_C PC2
+#define MOTOR_D PC3
+
+// EEPROM Addresses
+#define CONF_CONST_OKAY (uint8_t)0xAA
+#define CONF_ADDR_OKAY 0x0004
+#define CONF_ADDR_ADDR 0x0000
+#define CONF_ADDR_OFFSET 0x0002
diff --git a/software/firmware_module/module_rev0/src/main.c b/software/firmware_module/module_rev0/src/main.c
index b8f4b08..8c8c031 100644
--- a/software/firmware_module/module_rev0/src/main.c
+++ b/software/firmware_module/module_rev0/src/main.c
@@ -1,20 +1,15 @@
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+
+#include "global.h"
 #include "mctrl.h"
 #include "rcount.h"
 #include "rs485.h"
-#include <avr/io.h>
-#include <avr/wdt.h>
-#include <stdlib.h>
-#include <util/delay.h>
-/*
- * PD0 -> BUS_RX
- * PD1 -> BUS_TX
- * PD2 -> BUS_DIR (0=RECV/1=SEND)
- *
- * PD3 -> SENSOR_IN
- *
- * PC0-3 -> MOTOR CTRL
- */
-
 uint16_t address = 0x0000;
 int16_t calib_offset = 0x0000;
 
@@ -38,11 +33,6 @@ uint8_t eeprom_read_c(uint16_t address) {
   return EEDR;
 }
 
-#define CONF_CONST_OKAY (uint8_t)0xAA
-#define CONF_ADDR_OKAY 0x0004
-#define CONF_ADDR_ADDR 0x0000
-#define CONF_ADDR_OFFSET 0x0002
-
 void initialSetup() {
   wdt_disable();
   if (eeprom_read_c(CONF_ADDR_OKAY) == CONF_CONST_OKAY) {
@@ -159,4 +149,4 @@ int main() {
   while (1 == 1) {
     readCommand();
   }
-}
\ No newline at end of file
+}
diff --git a/software/firmware_module/module_rev0/src/mctrl.c b/software/firmware_module/module_rev0/src/mctrl.c
index 55130c1..e2a0fa1 100644
--- a/software/firmware_module/module_rev0/src/mctrl.c
+++ b/software/firmware_module/module_rev0/src/mctrl.c
@@ -1,3 +1,12 @@
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+
+
 #include "mctrl.h"
 
 // Motor driver steps definition. Reverse for direction change.
@@ -97,7 +106,7 @@ ISR(TIMER1_COMPA_vect) {
     return;
   } // if sts_flag_pwrdwn, STOP!
   if (steps_since_home >
-      STEPS_PRE_REV * 1.5) { // check if home is missing for too long
+      STEPS_PER_REV * 1.5) { // check if home is missing for too long
     // home missing error. Wheel probably stuck or power fail
     sts_flag_noHome = 1;
     failSafe();
@@ -124,24 +133,24 @@ ISR(TIMER1_COMPA_vect) {
     absolute_pos--;
   } else { // when no failsafe is triggered and homing is done
     // calculate target position
-    uint16_t target_pos = (target_flap * STEPS_PRE_FLAP) + rel_offset;
-    if (target_pos >= STEPS_PRE_REV) {
-      target_pos -= STEPS_PRE_REV;
+    uint16_t target_pos = (target_flap * STEPS_PER_FLAP) + rel_offset;
+    if (target_pos >= STEPS_PER_REV) {
+      target_pos -= STEPS_PER_REV;
     }
     if (absolute_pos != target_pos) {
       // if target position is not reached, move motor
       ticksSinceMove = 0;
       mctrl_step();
       absolute_pos++;
-      if (absolute_pos >= STEPS_PRE_REV) {
-        absolute_pos -= STEPS_PRE_REV;
+      if (absolute_pos >= STEPS_PER_REV) {
+        absolute_pos -= STEPS_PER_REV;
       }
       // detect home position
       if ((PIND & (1 << PD3)) == 0) {
         if (lastSens == 0) {
           // new home transition
           int16_t errorDelta =
-              (absolute_pos > (STEPS_PRE_REV / 2) ? absolute_pos - STEPS_PRE_REV
+              (absolute_pos > (STEPS_PER_REV / 2) ? absolute_pos - STEPS_PER_REV
                                                   : absolute_pos);
           sts_flag_errorTooBig =
               (errorDelta > 30) || (errorDelta < -30) ? 1 : 0;
@@ -208,11 +217,11 @@ void mctrl_set(uint8_t flap, uint8_t fullRotation) {
   if (fullRotation == 0) {
     target_flap = flap;
     // if (absolute_pos < STEPS_ADJ) {
-    //   absolute_pos += STEPS_PRE_REV;
+    //   absolute_pos += STEPS_PER_REV;
     // }
     // absolute_pos -= STEPS_ADJ;
   } else {
-    target_flap = (target_flap + (STEPS_PRE_FLAP - 1)) % STEPS_PRE_FLAP;
+    target_flap = (target_flap + (STEPS_PER_FLAP - 1)) % STEPS_PER_FLAP;
     afterRotation = flap;
   }
 }
@@ -239,4 +248,4 @@ void mctrl_step() {
     step_index = 0;
   }
   PORTC = motor_steps[step_index];
-}
\ No newline at end of file
+}
diff --git a/software/firmware_module/module_rev0/src/mctrl.h b/software/firmware_module/module_rev0/src/mctrl.h
index cedbc3f..bc9861c 100644
--- a/software/firmware_module/module_rev0/src/mctrl.h
+++ b/software/firmware_module/module_rev0/src/mctrl.h
@@ -1,24 +1,25 @@
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+
+
+#include "global.h"
+#include "rcount.h"
+
 #pragma once
 
-#define MP_A PC0
-#define MP_B PC1
-#define MP_C PC2
-#define MP_D PC3
 
-#define STEPS_PRE_REV 2025
-#define STEPS_PRE_FLAP 45
+#define STEPS_PER_REV 2025
+#define STEPS_PER_FLAP 45
 #define STEPS_ADJ 0       // added per flap to compensate for motor power down
 #define AMOUNTFLAPS 45
 
 #define ERROR_DATASETS 8
 
-#include <stdlib.h>
-#include <string.h>
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <util/delay.h>
-#include "rcount.h"
-
 #ifdef __cplusplus
 extern "C" {
 #endif // __cplusplus
@@ -33,4 +34,4 @@ void mctrl_power(uint8_t state);
 
 #ifdef __cplusplus
 }
-#endif // __cplusplus
\ No newline at end of file
+#endif // __cplusplus
diff --git a/software/firmware_module/module_rev0/src/rcount.c b/software/firmware_module/module_rev0/src/rcount.c
index 58c3c7f..789831f 100644
--- a/software/firmware_module/module_rev0/src/rcount.c
+++ b/software/firmware_module/module_rev0/src/rcount.c
@@ -1,3 +1,12 @@
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+
+
 #include "rcount.h"
 
 uint8_t rc_eeprom_write_c(uint16_t address, uint8_t data) {
diff --git a/software/firmware_module/module_rev0/src/rcount.h b/software/firmware_module/module_rev0/src/rcount.h
index 7f0303d..d4e0d8e 100644
--- a/software/firmware_module/module_rev0/src/rcount.h
+++ b/software/firmware_module/module_rev0/src/rcount.h
@@ -1,5 +1,12 @@
-#include <avr/io.h>
-#include <avr/interrupt.h>
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+
+#include "global.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -10,4 +17,3 @@ void rc_tick();
 #ifdef __cplusplus
 }
 #endif // __cplusplus
-
diff --git a/software/firmware_module/module_rev0/src/rs458.c b/software/firmware_module/module_rev0/src/rs458.c
index 87da365..3682bf5 100644
--- a/software/firmware_module/module_rev0/src/rs458.c
+++ b/software/firmware_module/module_rev0/src/rs458.c
@@ -1,3 +1,11 @@
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+
 #include "rs485.h"
 
 void rs485_init() {
diff --git a/software/firmware_module/module_rev0/src/rs485.h b/software/firmware_module/module_rev0/src/rs485.h
index fb2d228..f787c9f 100644
--- a/software/firmware_module/module_rev0/src/rs485.h
+++ b/software/firmware_module/module_rev0/src/rs485.h
@@ -1,3 +1,12 @@
+/* Copyright (C) 2025 Dennis Gunia - All Rights Reserved
+ * You may use, distribute and modify this code under the
+ * terms of the  AGPL-3.0 license.
+ *
+ * https://www.dennisgunia.de
+ * https://github.com/dennis9819/splitflap_v1
+ */
+#include "global.h"
+
 #pragma once
 //#define F_CPU 16000000UL
 #define UART_BAUD 19200
@@ -6,8 +15,7 @@
 #define SFBUS_SOF_BYTE '+'
 #define SFBUS_EOF_BYTE '$'
 
-#include <avr/io.h>
-#include <avr/interrupt.h>
+
 
 #ifdef __cplusplus
 extern "C" {
@@ -24,4 +32,4 @@ void sfbus_send_frame(uint16_t address, char* payload, uint8_t length);
 
 #ifdef __cplusplus
 }
-#endif // __cplusplus
\ No newline at end of file
+#endif // __cplusplus