diff --git a/presentation/config/metainfo.tex b/presentation/config/metainfo.tex
index e835eee..062dec3 100644
--- a/presentation/config/metainfo.tex
+++ b/presentation/config/metainfo.tex
@@ -2,7 +2,7 @@
 %Necessary Information
 \author[C\&F]{Clemens, Franz}
 \title{IoT Night}
-\subtitle{ESP8266 \& parts}
+\subtitle{S stands for security}
 %The day of the presentation
 \date{\today}
 
diff --git a/presentation/content/bib.bib b/presentation/content/bib.bib
index 57a1081..13f5dea 100644
--- a/presentation/content/bib.bib
+++ b/presentation/content/bib.bib
@@ -6,4 +6,12 @@
 }
 @misc{micropython-doc,
 	url={https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/intro.html}
-}
\ No newline at end of file
+}
+@misc{node-dht,
+	url={https://www.mikrocontroller.net/topic/389850}}
+@misc{node-led,
+	url={https://www.pinterest.de/pin/658088564269958262/}}
+@misc{node-button,
+	url={https://alexbloggt.com/esp8266-pushover/}}
+@misc{mp-interrupt,
+	url={{https://docs.micropython.org/en/latest/esp8266/reference/isr_rules.html}}}
diff --git a/presentation/images/button-nodemcu.png b/presentation/images/button-nodemcu.png
new file mode 100644
index 0000000..b18f97b
Binary files /dev/null and b/presentation/images/button-nodemcu.png differ
diff --git a/presentation/images/node-led.jpg b/presentation/images/node-led.jpg
new file mode 100644
index 0000000..aed6313
Binary files /dev/null and b/presentation/images/node-led.jpg differ
diff --git a/presentation/images/nodemcu-dht22.png b/presentation/images/nodemcu-dht22.png
new file mode 100644
index 0000000..ba96cfc
Binary files /dev/null and b/presentation/images/nodemcu-dht22.png differ
diff --git a/presentation/presentation.tex b/presentation/presentation.tex
index 4a4b386..b20ab04 100644
--- a/presentation/presentation.tex
+++ b/presentation/presentation.tex
@@ -187,14 +187,13 @@ Windows:
 	\item 115200 Baud
 	\item $n$ beherzte \textit{<ENTER>}-Drücke
 \end{itemize}
-%TODO: bild mit REPL (inkl ENTERs)
 \end{frame}
 
 \lstset{language=Python,captionpos=b}
 
 \begin{frame}{REPL}
 \framesubtitle{Hello World!}
-%TODO: bild
+%TODO: bild mit REPL (inkl ENTERs)
 \end{frame}
 
 
@@ -220,13 +219,17 @@ import webrepl_setup
 \end{lstlisting}
 \begin{itemize}
 	\item \textit{import webrepl\_setup}
-	\item reset/start webrepl (import webrepl \& webrepl.start())
+	\item reset/start webrepl (\textit{import webrepl \& webrepl.start()})
 	\item visit \url{http://iot.wiai/webrepl/} or \url{http://micropython.org/webrepl/}
 	\item enter your ESP's IP (\textit{sta\_if.ifconfig()}) \& connect
 \end{itemize}
 \end{frame}
 
 \subsection{Init}
+\begin{frame}{main.py}
+	
+\end{frame}
+
 \subsection{Exkurs: Flask-Server}
 \begin{frame}[fragile]{Gegenseite: Flask}
 \begin{lstlisting}[caption={C\&C Server},label=cnc]
@@ -243,8 +246,8 @@ Starten:
 \begin{itemize}
 	\item[!] pip install Flask
 	\item python server.py
-	\item docker-compose up (server.py in src/)
-	\item FLASK\_APP=server.py flask run
+	\item[||] docker-compose up (server.py in src/)
+	\item[||] FLASK\_APP=server.py flask run
 \end{itemize}
 \end{frame}
 \begin{frame}[fragile]{Daten übertragen}
@@ -267,19 +270,20 @@ urequests.post(post_url, data=data, headers=json_header)
 \section{Basteln}
 \subsection{Blinkende LED}
 \begin{frame}{LED anschließen}
-TODO schema
+\image{.4\textwidth}{node-led}{LED \cite{node-led}}{img:led}
 \end{frame}
 \begin{frame}[fragile]{LEDs}
-\begin{lstlisting}[caption={LED},label=led]
+\setbeamercovered{invisible}
+\begin{lstlisting}[caption={LED},label=led,escapeinside={(*@}{@*)}]
 import machine, time, math
 pin = machine.Pin(0, machine.Pin.OUT)
 pin.on()
 pin.off()
-
+(*@\onslide<2->@*)
 pwm = machine.PWM(pin)
 pwm.duty(512)
 pwm.deinit()
-
+(*@\onslide<3->@*)
 def pulse(l, t):
 	for i in range(20):
 		l.duty(int(math.sin(i / 10 * math.pi) * 500 + 500))
@@ -289,24 +293,23 @@ pulse(led, 50)
 for i in range(10):
 	pulse(led, 20)
 \end{lstlisting}
+
 \end{frame}
 \subsection{Schalter und Taster}
 \begin{frame}[fragile]{Input}
-TODO: schema
+\image{.35\textwidth}{button-nodemcu}{Taster \cite{node-button}}{img:button}
 \begin{lstlisting}[caption={Input},label=input]
 import machine
 pin = machine.Pin(0, machine.Pin.IN, machine.Pin.PULL_UP)
-status = pin.value()
-
+# status = pin.value()
 def callback(p):
 	print('changed', p)
-
 pin.irq(trigger=machine.Pin.IRQ_RISING | machine.Pin.IRQ_FALLING, handler=callback)
 \end{lstlisting}
 \end{frame}
 \subsection{Sensoren}
 \begin{frame}[fragile]{Sensoren}
-TODO: schema
+\image{.35\textwidth}{nodemcu-dht22}{DHT22 \cite{node-dht}}{img:dht}
 \begin{lstlisting}[caption={Sensoren},label=senors]
 import dht
 import machine
@@ -317,6 +320,17 @@ d.humidity()
 \end{lstlisting}
 \end{frame}
 
+\subsection{Interrupts}
+\begin{frame}{Here be dragons}
+	\begin{itemize}
+		\item Z.B. Callbacks von Tastern
+		\item pausieren main
+		\item dürf
+		\item Emergency exception buffer: \textit{micropython.alloc\_emergency\_exception\_buf(100)}
+		\item 
+	\end{itemize}
+	\cite{mp-interrupt}
+\end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%% References          %%%%%%%%%%