diff --git a/img/mqtt_7.jpg b/img/mqtt_7.jpg
index ffd44f3..ed262ab 100644
--- a/img/mqtt_7.jpg
+++ b/img/mqtt_7.jpg
diff --git a/img/mqtt_8.jpg b/img/mqtt_8.jpg
new file mode 100644
index 0000000..ffd44f3
--- /dev/null
+++ b/img/mqtt_8.jpg