diff --git a/cage_func.py b/cage_func.py
index 0f1f9c9..c5a2dd3 100644
--- a/cage_func.py
+++ b/cage_func.py
@@ -20,6 +20,12 @@ def deactivate_all():  # disables remote control and output on all PSUs and chan
     g.zDevice.disable_all()
 
 
+def setup_arduino():
+    for pin in g.relayPins:
+        g.arduino.pinMode(pin, "Output")
+        g.arduino.digitalWrite(pin, "LOW")
+
+
 def safe_arduino():  # sets output pins to low and closes serial connection
     for pin in g.relayPins:
         g.arduino.digitalWrite(pin, "LOW")
diff --git a/main.py b/main.py
index a2d375f..ac17039 100644
--- a/main.py
+++ b/main.py
@@ -25,7 +25,8 @@ print("Connecting to PSUs...")
 func.set_devices()  # initiate communication, set handles
 print("Connecting to Arduino...")
 g.arduino = Arduino()  # search for connected arduino and set handle
-print("Arduino found.")
+print("Arduino found, configuring pins.")
+func.setup_arduino()
 print("Activating PSU outputs...")
 func.activate_all()  # activate remote control and outputs on PSUs