diff --git a/Makefile b/Makefile
index 63a0925..ff3c4fb 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@ $(PRG).elf: $(OBJ)
 rgbyteclock.o: timer.o lcd.o rgbyteclock.h rtc.o spi.o ledcontroller.o
 main.o: rgbyteclock.o lcd.o spi.o ledcontroller.o rtc.o timer.o
 ledcontroller.o: led1642gw.o
-led1642gw.o: led1642gw.h
+led1642gw.o: led1642gw.h led1642gw_config.h
 timer.o: timer.h
 lcd.o: lcd.h timer.o
 rtc.o: rtc.h
diff --git a/led1642gw.c b/led1642gw.c
index 19de748..00e9996 100644
--- a/led1642gw.c
+++ b/led1642gw.c
@@ -15,32 +15,13 @@
 #include "led1642gw.h"
 #include <util/delay.h>
 
+#include "led1642gw_config.h"
+
 #define NUM_LED1642GW_CHANNELS (16)
 #define NUM_LED_CHANNELS (NUM_LED1642GW_CHANNELS*NUM_LED1642GW_ICs)
-#define NUM_LED1642GW_ICs (3)
 
 static uint16_t ledbuffer[NUM_LED_CHANNELS];
 
-
-#define DDR_CLK (DDRC)
-#define PORT_CLK (PORTC)
-#define PIN_CLK (3)
-#define SET_CLK_H() ((PORT_CLK) |=  (1<<(PIN_CLK)))
-#define SET_CLK_L() ((PORT_CLK) &= ~(1<<(PIN_CLK)))
-
-#define DDR_SDI (DDRC)
-#define PORT_SDI (PORTC)
-#define PIN_SDI (4)
-#define SET_SDI_H() ((PORT_SDI) |=  (1<<(PIN_SDI)))
-#define SET_SDI_L() ((PORT_SDI) &= ~(1<<(PIN_SDI)))
-
-#define DDR_LE (DDRC)
-#define PORT_LE (PORTC)
-#define PIN_LE (2)
-#define SET_LE_H() ((PORT_LE) |=  (1<<(PIN_LE)))
-#define SET_LE_L() ((PORT_LE) &= ~(1<<(PIN_LE)))
-
-
 static void write_data(uint16_t data, uint8_t le_clocks)
 {
   uint16_t mask = 0x8000;
diff --git a/led1642gw_config.h b/led1642gw_config.h
new file mode 100644
index 0000000..f688960
--- /dev/null
+++ b/led1642gw_config.h
@@ -0,0 +1,28 @@
+
+#ifndef LED1642GW_CONFIG_H_
+#define LED1642GW_CONFIG_H_
+
+#define NUM_LED1642GW_ICs (3)
+
+#define DDR_CLK (DDRC)
+#define PORT_CLK (PORTC)
+#define PIN_CLK (3)
+#define SET_CLK_H() ((PORT_CLK) |=  (1<<(PIN_CLK)))
+#define SET_CLK_L() ((PORT_CLK) &= ~(1<<(PIN_CLK)))
+
+#define DDR_SDI (DDRC)
+#define PORT_SDI (PORTC)
+#define PIN_SDI (4)
+#define SET_SDI_H() ((PORT_SDI) |=  (1<<(PIN_SDI)))
+#define SET_SDI_L() ((PORT_SDI) &= ~(1<<(PIN_SDI)))
+
+#define DDR_LE (DDRC)
+#define PORT_LE (PORTC)
+#define PIN_LE (2)
+#define SET_LE_H() ((PORT_LE) |=  (1<<(PIN_LE)))
+#define SET_LE_L() ((PORT_LE) &= ~(1<<(PIN_LE)))
+
+
+
+#endif // LED1642GW_CONFIG_H_
+