diff --git a/misc/JBL_screws_drilling_template.pdf b/misc/JBL_screws_drilling_template.pdf
index 80e32cf..6ee37f6 100644
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+       x="468.20572"
+       y="470.44086"
+       id="text94"><tspan
+         sodipodi:role="line"
+         id="tspan92"
+         x="468.20572"
+         y="470.44086"
+         style="font-size:12.5px;line-height:1.25">18</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:10px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.9375"
+       x="85.967384"
+       y="181.81386"
+       id="text98"><tspan
+         sodipodi:role="line"
+         id="tspan96"
+         x="85.967384"
+         y="181.81386"
+         style="font-size:10px;stroke-width:0.9375">Check scale on print!</tspan></text>
   </g>
 </svg>
diff --git a/notes.md b/notes.md
index b47b9be..4bda2b1 100644
--- a/notes.md
+++ b/notes.md
@@ -1,5 +1,22 @@
 # Doku Einrichtung volumio
 
+## Stromverbrauch
+ sudo /opt/vc/bin/vcgencmd get_throttled
+ 
+# disable HDMI port via rc.local - https://lab.stefanoperna.it/tutorial/raspberry-pi/switch-onoff-the-hdmi-port-in-raspberry-pi-3/
+ sudo nano /etc/rc.local
+   
+   # disable unused HDMI port to save power (switch back on with sudo /opt/vc/bin/tvservice -p)
+   /opt/vc/bin/tvservice -o
+   
+# disable power led via config.txt - https://www.raspberrypi.org/forums/viewtopic.php?t=149126#p1445502
+ nano /boot/config.txt
+ 
+   # Disable the PWR LED
+   dtparam=pwr_led_trigger=none
+   dtparam=pwr_led_activelow=off
+
+
 ## CJMCU-5102 (PCM5102A) verbunden https://blog.sengotta.net/connecting-a-pcm5102a-breakout-board-to-a-raspberry-pi/
 
  VCC <–> Pin 2 (5V)