From ca50a043028f1d3ae0ee1ec9562d7fd4193b744a Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <woho@hottis.de>
Date: Tue, 30 Jan 2018 16:46:27 +0100
Subject: [PATCH] a piece of documentation

---
 defines.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/defines.h b/defines.h
index 7982f2c..2d48809 100644
--- a/defines.h
+++ b/defines.h
@@ -15,6 +15,8 @@
 #define CONFIG_SWITCH 4
 #define LED_PIN 14
 
+// These both pins are connected via a 470k resistor.
+// The insulated touchpad is connected to pin TOUCH_PIN_RECEIVE.
 #define TOUCH_PIN_RECEIVE 16
 #define TOUCH_PIN_SEND 5