diff --git a/doc/mcu-examples/n28/README.md b/doc/mcu-examples/n28/README.md
index 4f7ad29..334c6dc 100644
--- a/doc/mcu-examples/n28/README.md
+++ b/doc/mcu-examples/n28/README.md
@@ -1,6 +1,5 @@
 
-N28
-===
+# N28
 
 
 N28 is a ATtiny84 based PCB with a door sensor and a temperature/humidity
@@ -8,8 +7,7 @@ sensor.
 
 
 
-Overview
---------
+## Overview
 
 - Role: Door sensor with temp sensor
 - MCU: AtTiny84
@@ -32,3 +30,18 @@ Overview
   - DOOR         : state of door/window (0=closed, >0=open)
 
 
+## Schematic
+
+![Schematic](https://gitea.aqbanking.de/martin/aqhome/raw/branch/master/doc/mcu-examples/n28/n28_schematic.png)
+
+
+## PCB Front
+
+![PCB Front](https://gitea.aqbanking.de/martin/aqhome/raw/branch/master/doc/mcu-examples/n28/n28_pcb_front.png)
+
+
+## PCB Back
+
+![PCB Front](https://gitea.aqbanking.de/martin/aqhome/raw/branch/master/doc/mcu-examples/n28/n28_pcb_back.png)
+
+