diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..478cd16
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "sdk"]
+	path = sdk
+	url = zwsd@192.168.1.3:p_dynamic_electrocardiograph/nrf5_sdk_17_1_0.git
diff --git a/sdk b/sdk
new file mode 160000
index 0000000..55d0fc7
--- /dev/null
+++ b/sdk
@@ -0,0 +1 @@
+Subproject commit 55d0fc77bc8a97141135856bcfc94987bb6a1c10