From 7b6e85c1c63993f20a9feb2942880c8acb232d08 Mon Sep 17 00:00:00 2001
From: Renzo Mischianti <renzo.mischianti@gmail.com>
Date: Wed, 23 Oct 2019 21:57:44 +0200
Subject: [PATCH] Add info

---
 PCF8575.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PCF8575.h b/PCF8575.h
index 629bf13..1ea2842 100644
--- a/PCF8575.h
+++ b/PCF8575.h
@@ -1,6 +1,6 @@
 /*
  * PCF8575 GPIO Port Expand
- * https://www.mischianti.org/
+ * https://www.mischianti.org/2019/07/22/pcf8575-i2c-16-bit-digital-i-o-expander/
  *
  * The MIT License (MIT)
  *