From fe0e15ec293c49494e32760a901f03a93db7fff2 Mon Sep 17 00:00:00 2001
From: Rotzbua <Rotzbua@users.noreply.github.com>
Date: Thu, 26 Jan 2017 16:05:11 +0100
Subject: [PATCH] Update README.rst

SPI is sensitive to electromagnetic noise
---
 README.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.rst b/README.rst
index a5d89f1..ae14b7f 100644
--- a/README.rst
+++ b/README.rst
@@ -196,6 +196,8 @@ Troubleshooting
   #. Check your connection, see `Pin Layout`_ .
   #. Check voltage. Most breakouts work with 3.3V.
   #. SPI only works with 3.3V, most breakouts seem 5V tollerant, but try a level shifter.
+  #. SPI do not like long connections. Try shorter connections.
+  #. SPI do not like prototyping boards. Maybe try a soldered connections.
   #. According to reports #101, #126 and #131, there may be a problem with the soldering on the MFRC522 breakout. You could fix this on your own.