From d3bdd8f601e2cfe0d8dce036bd8b7f9feef999e2 Mon Sep 17 00:00:00 2001
From: mcgurk <lehtinen@sci.fi>
Date: Thu, 22 Sep 2016 20:57:32 +0300
Subject: [PATCH] Update README.md

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

diff --git a/README.md b/README.md
index b402018..1955b89 100644
--- a/README.md
+++ b/README.md
@@ -122,6 +122,8 @@ Of course Arduino can be used many other ways. Add a PIR motion detector module
 
 ## Links
 
+http://playground.arduino.cc/Main/InterfacingWithHardware
+
 #### NES
 http://www.mit.edu/~tarvizo/nes-controller.html