Initial demo for Promo-Operation

doc/setup.md

@@ -0,0 +1,23 @@
+# Setup 
+
+```sh
+aplay -l
+sudo nano /etc/asound.conf
+```
+
+```
+defaults.pcm.card 2
+defaults.ctl.card 2
+```
+
+```sh
+# Start GUI
+alsamixer
+# CLI
+amixer sset Master 50%
+amixer sset Master 10%+
+amixer sset Master 10%-
+```
+
+
+apt install -y libpaho-mqttpp-dev