diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index ec75a8e..0000000
--- a/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-settings.h
diff --git a/settings.h b/settings.h
new file mode 100644
index 0000000..fb06455
--- /dev/null
+++ b/settings.h
@@ -0,0 +1,10 @@
+#define IDX_CPS_KEY 0
+#define IDX_CPM_KEY 2
+#define IDX_uSv_KEY 4
+
+#define IDX_CPM 3
+#define IDX_uSv 5
+#define IDX_MODE 6
+
+#define PIN_UART_RX 4 //D2 on Wemos D1 Mini
+#define PIN_UART_TX 13 // UNUSED