diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f8266ce
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "iflytop_microcontroller"]
+	path = iflytop_microcontroller
+	url = zwsd@192.168.1.3:z2nd_lib/iflytop_microcontroller.git
diff --git a/iflytop_microcontroller b/iflytop_microcontroller
new file mode 160000
index 0000000..86bc5d0
--- /dev/null
+++ b/iflytop_microcontroller
@@ -0,0 +1 @@
+Subproject commit 86bc5d0a11945d7694030698a0492ef375731776