diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a081b59
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "corne-cherry/pcb/kbd"]
+	path = corne-cherry/pcb/kbd
+	url = https://github.com/foostan/kbd
diff --git a/corne-cherry/pcb/kbd b/corne-cherry/pcb/kbd
new file mode 160000
index 0000000..e6b740e
--- /dev/null
+++ b/corne-cherry/pcb/kbd
@@ -0,0 +1 @@
+Subproject commit e6b740e597b23f9370d4f8f19beb0164f4eac087