diff --git a/.env b/.env
new file mode 100644
index 0000000..d6a25a9
--- /dev/null
+++ b/.env
@@ -0,0 +1,5 @@
+SERIAL_DEV="/dev/cu.usbserial-A700e0gN"
+#SERIAL_DEV="/dev/ttyUSB0"
+SERIAL_SPEED = 9600
+#SERIAL_SPEED = 19200
+#SERIAL_SPEED = 115200