diff --git a/.gitmodules b/.gitmodules
index 47fb259..a01553f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,15 @@
 [submodule "gateway"]
 	path = gateway
 	url = ssh://vanilla@dev.danilafe.com/CS-46X/gateway
+[submodule "libraries/arduino-LoRa"]
+	path = libraries/arduino-LoRa
+	url = https://github.com/sandeepmistry/arduino-LoRa.git
+[submodule "external/ArduinoCore-avr"]
+	path = external/ArduinoCore-avr
+	url = https://github.com/arduino/ArduinoCore-avr.git
+[submodule "external/nanopb"]
+	path = external/nanopb
+	url = https://github.com/nanopb/nanopb.git
+[submodule "libraries/TinyGPSPlus"]
+	path = libraries/TinyGPSPlus
+	url = https://github.com/mikalhart/TinyGPSPlus.git
diff --git a/external/ArduinoCore-avr b/external/ArduinoCore-avr
new file mode 160000
index 0000000..0f3d4da
--- /dev/null
+++ b/external/ArduinoCore-avr
@@ -0,0 +1 @@
+Subproject commit 0f3d4da614d5a195e03d70741031092a002e2d33
diff --git a/external/nanopb b/external/nanopb
new file mode 160000
index 0000000..58699f8
--- /dev/null
+++ b/external/nanopb
@@ -0,0 +1 @@
+Subproject commit 58699f8a737823eabe001d4c1cf7ab2684ced861
diff --git a/libraries/TinyGPSPlus b/libraries/TinyGPSPlus
new file mode 160000
index 0000000..cfb60e5
--- /dev/null
+++ b/libraries/TinyGPSPlus
@@ -0,0 +1 @@
+Subproject commit cfb60e5e381c025ff7e52838897edab8a6e7d449
diff --git a/libraries/arduino-LoRa b/libraries/arduino-LoRa
new file mode 160000
index 0000000..7edf89a
--- /dev/null
+++ b/libraries/arduino-LoRa
@@ -0,0 +1 @@
+Subproject commit 7edf89a982f08101c6072ff21c8b9067b4b6a089