From 3a1042747f20bc83876375efcc967e27ea0e8026 Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <wolfgang.hottgenroth@icloud.com>
Date: Mon, 10 Jun 2019 19:48:41 +0100
Subject: [PATCH] link to pinout diagram

---
 readme.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/readme.md b/readme.md
index 15b0900..844515c 100644
--- a/readme.md
+++ b/readme.md
@@ -23,6 +23,12 @@ This needs to be done at every boot.
 Kudos to danjperron, cmp. (https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=224533&hilit=rs+485#p1383709)
 
 
+## Pinout
+
+Find a good pinout diagram at (https://raw.githubusercontent.com/ppelleti/hs-wiringPi/master/pin-diagram.png).
+
+TX is at GPIO14, RX is at GPIO15 and RTS (control line for transmitter enable) is at GPIO17.
+
 
 ## Python snippet to test