diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f163bc5
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "s3NFC"]
+	path = s3NFC
+	url = https://github.com/indiana2021/NFC_SOURCE_esp32.git