diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..2ef2acb
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/PCA9685-Arduino"]
+	path = lib/PCA9685-Arduino
+	url = https://github.com/NachtRaveVL/PCA9685-Arduino
diff --git a/lib/PCA9685-Arduino b/lib/PCA9685-Arduino
new file mode 160000
index 0000000..a70be39
--- /dev/null
+++ b/lib/PCA9685-Arduino
@@ -0,0 +1 @@
+Subproject commit a70be39257e317d35e9118b385006a1e030e6452