diff --git a/.gitmodules b/.gitmodules
index 36c24c5..d2cbd1b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "03_Hardware/hw-kicad-library"]
 	path = 03_Hardware/hw-kicad-library
 	url = ssh://git@gitea.jacknick.xyz:2222/nickdante8/hw-kicad-library.git
+[submodule "03_Hardware/hw-heater-on-oil"]
+	path = 03_Hardware/hw-heater-on-oil
+	url = ssh://git@gitea.jacknick.xyz:2222/nickdante8/hw-heater-on-oil.git
diff --git a/03_Hardware/hw-heater-on-oil b/03_Hardware/hw-heater-on-oil
new file mode 160000
index 0000000..0435735
--- /dev/null
+++ b/03_Hardware/hw-heater-on-oil
@@ -0,0 +1 @@
+Subproject commit 043573593b11bebf31e6e13b85890a0568e166e2