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diff --git a/reprap_mendel_prusa/teacup_firmware/extruder/config.h b/reprap_mendel_prusa/teacup_firmware/extruder/config.h
new file mode 100644
index 0000000..c842060
--- /dev/null
+++ b/reprap_mendel_prusa/teacup_firmware/extruder/config.h
@@ -0,0 +1,95 @@
+/* Notice to developers: this file is intentionally included twice. */
+
+/*
+	CPU clock rate
+*/
+#ifndef	F_CPU
+	#define	F_CPU	16000000L
+#endif
+
+/*
+	other fallbacks for the Arduino IDE
+*/
+#define EXTRUDER
+#define GEN3
+
+#include	"arduino.h"
+
+// controller index- bus is multidrop after all
+#define	THIS_CONTROLLER_NUM 0
+
+//RS485 Interface pins
+#define RX_ENABLE_PIN DIO4
+#define TX_ENABLE_PIN AIO2
+
+// Control pins for the A3949 chips
+#define H1D DIO7
+#define H1E DIO5
+#define H2D DIO8
+#define H2E DIO6
+
+// PWM versions of the enable_pins
+#define H1E_PWM OCR0B
+#define H2E_PWM OCR0A
+
+//Step/Dir Pins from motherboard to extruder
+//IMPORTANT: Assumes that the step pin is on PCIE0
+#define E_STEP_PIN DIO10
+#define E_DIR_PIN DIO9
+
+//Trimpot is on AIO0, pin 23
+#define TRIM_POT AIO0
+#define TRIM_POT_CHANNEL 0
+
+//Read analog voltage from thermistor
+#define TEMP_PIN AIO3
+#define TEMP_PIN_CHANNEL 3
+
+//Read analog voltage from thermistor
+#define TEMP_BED_PIN AIO6
+#define TEMP_BED_PIN_CHANNEL 6
+
+
+#define	REFERENCE	REFERENCE_AVCC
+
+#define	TEMP_THERMISTOR
+
+#define	HEATER_PIN	DIO11
+#define BED_PIN		AIO1
+#define FAN_PIN		DIO12
+
+// extruder settings
+#define	TEMP_HYSTERESIS				5
+#define	TEMP_RESIDENCY_TIME		60
+
+#ifdef	DEFINE_TEMP_SENSOR
+DEFINE_TEMP_SENSOR(extruder,	TT_THERMISTOR,		TEMP_PIN_CHANNEL,		THERMISTOR_EXTRUDER)
+DEFINE_TEMP_SENSOR(bed,			TT_THERMISTOR,		TEMP_BED_PIN_CHANNEL,	THERMISTOR_EXTRUDER)
+// dummy temp sensor so analog_mask includes trim pot
+DEFINE_TEMP_SENSOR(noheater,	TT_THERMISTOR,		TRIM_POT_CHANNEL,		0)
+#endif
+
+#ifdef	DEFINE_HEATER
+DEFINE_HEATER(extruder,	DIO11)
+DEFINE_HEATER(bed,			AIO1)
+#endif
+
+// list of PWM-able pins and corresponding timers
+// timer1 is used for step timing so don't use OC1A/OC1B (DIO9/DIO10)
+// OC0A												DIO6
+// OC0B												DIO5
+// OC1A												DIO9
+// OC1B												DIO10
+// OC2A												DIO11
+// OC2B												DIO3
+
+#define	TH_COUNT					8
+#define	PID_SCALE					1024L
+
+
+/*
+	Motors
+*/
+
+#define enable_motors()				do { TCCR0A |= MASK(COM0A1) | MASK(COM0B1); } while (0)
+#define disable_motors()			do { TCCR0A &= ~MASK(COM0A1) & ~MASK(COM0B1); } while (0)