diff --git a/.coveragerc b/.coveragerc
index 45b67e14b84..756c82f755e 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -7,6 +7,9 @@ omit =
     homeassistant/external/*
 
     # omit pieces of code that rely on external devices being present
+    homeassistant/components/arduino.py
+    homeassistant/components/*/arduino.py
+
     homeassistant/components/wink.py
     homeassistant/components/*/wink.py