We’ll be using a Raspberry Pi 3 with pure Raspbian.

In /boot/config.txt, we add the following lines:

enable_uart=1
dtoverlay=pi3-disable-bt

remove the word phase “console=serial0,115200” or “console=ttyAMA0,115200” from /boot/cmdline.txt
r

Problems:

– The devices disconnected after few days.