diff --git a/esp_time.ino b/esp_time.ino
index 46d88ea..fff40c6 100644
--- a/esp_time.ino
+++ b/esp_time.ino
@@ -2,6 +2,14 @@
  * Copyright Paul Warren 2019 <pwarren@pwarren.id.au>
  * 
  * Released under the terms of the GPLv3 license.
+ *
+ *D1Mini: Colour  : UART Module
+ *    D5: White   : DOUT
+ *    D6: Green   : DIN
+ *    D7: Yellow  : Wake Up
+ *    D8: Blue    : Reset
+ *
+ *
  */
 #include <ESP8266HTTPClient.h>
 #include <ESP8266WiFi.h>