From 9e6e309509bbb33805adc3b2ce8debb5a726cf0f Mon Sep 17 00:00:00 2001
From: Franziska Kunsmann <hi@kunsmann.eu>
Date: Mon, 23 Sep 2019 20:31:43 +0200
Subject: [PATCH] update README

---
 README.md | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index a2f7a89..2e1c96d 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,20 @@
-# Octoprint-LCD-HD44780
\ No newline at end of file
+# Octoprint-LCD-HD44780
+
+This Plugin allows you to connect a HD44780-compatible LCD screen to your
+Raspberry Pi running [OctoPrint](https://octoprint.org/).
+
+Currently, the screen size is fixed to 20x4 characters. The used GPIO pins
+are fixed, too.
+
+## Wiring
+  LCD PIN         | RasPi GPIO
+  ----------------+-----------
+  Register Select | 15
+  Enable          | 16
+  Data 4          | 21
+  Data 5          | 22
+  Data 6          | 23
+  Data 7          | 24
+
+See [kunsi/rpi-atx-lcd-breakout](https://git.kunsmann.eu/kunsi/rpi-atx-lcd-breakout)
+for a breakout board which connects all the pins.