From 142ff52329ed78240069a69627a09540c7a1bc90 Mon Sep 17 00:00:00 2001
From: fauresystems <34378695+fauresystems@users.noreply.github.com>
Date: Sun, 5 Apr 2020 09:06:24 +0200
Subject: [PATCH] Update README.md

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index b8208b8..f852d46 100644
--- a/README.md
+++ b/README.md
@@ -129,7 +129,7 @@ DATA messages when many I/O like on Arduino Mega 2560 and MESG information messa
 
 ## 4. Application protocol for escape room 2.0 props
 
-A *level 7* protocol (*application level*) is necessary for connected props to report data and to be controlled for the escape room automation and game play.
+A *level 7* [protocol](https://github.com/xcape-io/PyProps/blob/master/PROTOCOL.md) (*application level*) is necessary for connected props to report data and to be controlled for the escape room automation and game play.
 
 We have defined a simple human-readable text protocol. Messages are encoded in UTF-8, in Arduino sketches use:
 ```csharp