diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..643f23716bf20e58ab0e51051ecb6f3b60f1f5e8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "pico-sdk"]
+	path = pico-sdk
+	url = https://github.com/raspberrypi/pico-sdk
diff --git a/pico-sdk b/pico-sdk
new file mode 160000
index 0000000000000000000000000000000000000000..2e6142b15b8a75c1227dd3edbe839193b2bf9041
--- /dev/null
+++ b/pico-sdk
@@ -0,0 +1 @@
+Subproject commit 2e6142b15b8a75c1227dd3edbe839193b2bf9041