Turn 3.5mm Jack on Raspberry Pi Running LineageOS 16

You will need an Android Terminal. You can turn on the default one in the developer settings. Need to turn on developer mode?

You will also need to enable root which can also be done in the Developer settings

Open up the terminal app and run


More info here


Installing LineageOS on Raspberry Pi B+

Download LineageOS

Download the unofficial LineageOS 16 build from the following page



Unzip the file with

unzip ~/Downloads/lineage-16.0-20200207-UNOFFICIAL-KonstaKANG-rpi3.zip

Write to SD Card

Either use the instructions on the following link to write it to the SD card


Or use DD

WARNING! Make sure “/dev/mmcblk0” is the correct SD Card. Refer to here if you need to locate the path for the SD Card.

sudo dd if=~/Downloads/lineage-16.0-20200207-UNOFFICIAL-KonstaKANG-rpi3.img of=/dev/mmcblk0 bs=1M status=progress

Plug you SD Card into your Pi and boot it up.

Raspberry Pi – Ping IP Address and Toggle LED

The following script is for monitoring if an IP address is reachable or not. If it becomes unavailable the script will turn on a LED that is plugged into one of the GPIO pins of the Raspberry Pi. View pinout here


# Script to ping ip address and turn on LED on if device is unreachable.
                                                                                                                                                                                                 nPin="18"  # Change if GPIO pin is different                                                                                                     
ledPin="gpio${nPin}"                                                                                                                                                                                                                            toPing=""  # Change to address you want to ping

echo "${nPin}" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/${ledPin}/direction

if ( fping -r1 $toPing | grep -v alive ); then
         echo "Internet unreachable"
         # Turn on LED
         echo "1" > /sys/class/gpio/${ledPin}/value
         # Turn off LED 
         echo "0" > /sys/class/gpio/${ledPin}/value

Save script as ping_led.sh and make it executable.

chmod +x ping_led.sh

and run the script.

sh ping_led.sh

Run script in crontab

You can setup the script to run every minute using a crontab

crontab -e

Add the following line

*/1 * * * * /home/pi/ping_led.sh

Should now execute the script every minute and not need any human interaction.

How to Set a Static IP Address on a Raspberry Pi

The examples given here are for modifying the wlan0 interface.  Replace wlan0 with the interface you are configuring. i.e. (eth0,wlan1)

Method 1

This was the typical way to add a static IP address to a Pi, if you have issues with this, then try Method 2.

sudo vi /etc/network/interfaces

In the file it is pretty easy to see which lines control which interface, find the lines that control wlan0 (or the interface your configuring) and change/add to look like below.

iface wlan0 inet static

Save the file, reboot, and the Pi should come up with the new static IP.

Method 2

It looks like on the newer versions of Raspbian, the above method does not work anymore, so now you have to edit the following file

sudo vi /etc/dhcpcd.conf

and add the following lines.

interface wlan0
static ip_address=
static routers=
static domain_name_servers=

If you just need to assign a static IP address, to the device, because it is going to be setup as a hotspot or something, you can get away with the following.

interface wlan0
static ip_address=

If you run into issues with it not assigning the address, check the /etc/network/interfaces file and make sure that the line that starts with “iface wlan0” says manual at the end and not static.  If it says “iface wlan0 inet static”, change it to “iface wlan0 inet manual”