diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..13e11a7
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "external/esp32-llm"]
+	path = external/esp32-llm
+	url = https://github.com/DaveBben/esp32-llm
+[submodule "external/esp-picotts"]
+	path = external/esp-picotts
+	url = https://github.com/DiUS/esp-picotts
diff --git a/external/esp-picotts b/external/esp-picotts
new file mode 160000
index 0000000..bf1a8df
--- /dev/null
+++ b/external/esp-picotts
@@ -0,0 +1 @@
+Subproject commit bf1a8df9d2be1e088a03a775d439ac66e18438dc
diff --git a/external/esp32-llm b/external/esp32-llm
new file mode 160000
index 0000000..934dab4
--- /dev/null
+++ b/external/esp32-llm
@@ -0,0 +1 @@
+Subproject commit 934dab4d242d259abd88678488ea3b62d4fca601