diff --git a/.gitmodules b/.gitmodules
index 32cf4fb..e40d088 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "MCUME_pico2/pico-sdk"]
 	path = MCUME_pico2/pico-sdk
 	url = https://github.com/raspberrypi/pico-sdk
+[submodule "MCUME_pico2/pico-extras"]
+	path = MCUME_pico2/pico-extras
+	url = https://github.com/adafruit/pico-extras.git
diff --git a/MCUME_pico2/pico-extras b/MCUME_pico2/pico-extras
new file mode 160000
index 0000000..53a6141
--- /dev/null
+++ b/MCUME_pico2/pico-extras
@@ -0,0 +1 @@
+Subproject commit 53a61412565177133c810441f675a5d4a0bf24fa