diff --git a/src/defs.h b/src/defs.h
index 72153b7..ae0b952 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -44,4 +44,9 @@
 #define LED_RIGHT_RED() (LED34_SW_PORT |= (1 << LED34_SW_PIN))
 
 #define LED_GREEN_BRIGHTNESS 2
-#define LED_RED_BRIGHTNESS 20
\ No newline at end of file
+#define LED_RED_BRIGHTNESS 20
+
+#define SET_PROBE_HEIGHT() (PROBE_OUT_PORT &= ~(1 << PROBE_OUT_PIN))
+#define SET_PROBE_LOW() (PROBE_OUT_PORT |= (1 << PROBE_OUT_PIN))
+#define SET_ESTOP_HEIGHT() (ESTOP_OUT_PORT &= ~(1 << ESTOP_OUT_PIN))
+#define SET_ESTOP_LOW() (ESTOP_OUT_PORT |= (1 << ESTOP_OUT_PIN))
\ No newline at end of file