diff --git a/backend/.keep b/backend/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/esp32/.keep b/esp32/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/mobile/.keep b/mobile/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/protocol/.keep b/protocol/.keep
new file mode 100644
index 0000000..e69de29