diff --git a/.gitmodules b/.gitmodules
index 8061c93..a0bce5b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "hoverboard-firmware-hack-foc-serial-esc"]
 	path = hoverboard-firmware-hack-foc-serial-esc
 	url = https://repos.ctdo.de/interfisch/hoverboard-firmware-hack-foc-serial-esc
+[submodule "controller_teensy/lib/hoverboard-esc-serial-comm"]
+	path = controller_teensy/lib/hoverboard-esc-serial-comm
+	url = git@git.ctdo.de:interfisch/hoverboard-esc-serial-comm.git
diff --git a/controller_teensy/lib/hoverboard-esc-serial-comm b/controller_teensy/lib/hoverboard-esc-serial-comm
new file mode 160000
index 0000000..91bfeff
--- /dev/null
+++ b/controller_teensy/lib/hoverboard-esc-serial-comm
@@ -0,0 +1 @@
+Subproject commit 91bfeffcb33448f45b17a753ef8b798886e63af1