more notes, disabling bluetooth

experiment/production/Misc-Notes.md

@@ -136,6 +136,22 @@ apt autoremove -y --purge
 
 ```
 
+---
+
+Disable bluetooth:
+
+```
+echo 'dtoverlay=pi3-disable-bt >> /boot/config.txt
+```
+
+and related services (from [here](https://scribles.net/disabling-bluetooth-on-raspberry-pi/)):
+
+```
+systemctl disable hciuart.service
+systemctl disable bluealsa.service
+systemctl disable bluetooth.service
+```
+
 ### GPRS fiddling
 
 I'm still trying to get GPRS to work consistently.