diff --git a/README.md b/README.md
index 87dc8c8..7cc4d56 100644
--- a/README.md
+++ b/README.md
@@ -14,3 +14,5 @@ python3 gpio_test.py
 * Script to get the state of single GPIO's ("python3 gpioctrl.py CCU6_001 stat" )
 * implement gpio_daemon with XMP:RPC interface for remote access
 
+## GPIO's pin assignment raspberryPI
+![GPIO description](https://www.computerhilfen.de/info/wp-content/uploads/2016/04/computerhilfen_de-gpio.png "GPIO")
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