diff --git a/presentation/content/bib.bib b/presentation/content/bib.bib
index 13f5dea..34df84d 100644
--- a/presentation/content/bib.bib
+++ b/presentation/content/bib.bib
@@ -8,7 +8,7 @@
 	url={https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/intro.html}
 }
 @misc{node-dht,
-	url={https://www.mikrocontroller.net/topic/389850}}
+	url={https://www.losant.com/blog/getting-started-with-the-esp8266-and-dht22-sensor}}
 @misc{node-led,
 	url={https://www.pinterest.de/pin/658088564269958262/}}
 @misc{node-button,
diff --git a/presentation/images/nodemcu-dht22.png b/presentation/images/nodemcu-dht22.png
index ba96cfc..b796b03 100644
Binary files a/presentation/images/nodemcu-dht22.png and b/presentation/images/nodemcu-dht22.png differ