diff --git a/controller_teensy/src/main.cpp b/controller_teensy/src/main.cpp
index acdf868..e34650f 100644
--- a/controller_teensy/src/main.cpp
+++ b/controller_teensy/src/main.cpp
@@ -215,11 +215,11 @@ void setup()
   pinMode(PIN_BRAKE, INPUT);
   pinMode(PIN_START, INPUT_PULLUP);
 
-  pinMode(PIN_LED_START, OUTPUT);
+  pinMode(PIN_LED_START, OUTPUT); //Active High
   digitalWrite(PIN_LED_START,HIGH);
-  pinMode(PIN_MODE_LEDG, OUTPUT);
+  pinMode(PIN_MODE_LEDG, OUTPUT); //Active Low
   digitalWrite(PIN_MODE_LEDG,LOW);
-  pinMode(PIN_MODE_LEDR, OUTPUT);
+  pinMode(PIN_MODE_LEDR, OUTPUT); //Active Low
   digitalWrite(PIN_MODE_LEDR,LOW);
 
   pinMode(PIN_LATCH_ENABLE, OUTPUT);