homePi

Kodi, IR Blaster, remote control from web interface, anything that can run on an old Pi. Mostly BASH and Python

1. check external ip address

#!/bin/bash

ip=$(curl -s https://api.ipify.org) echo "$ip"

2. Send email (with new ip address) https://linuxhint.com/bash_script_send_email/

3. Install very simple CLI smtp client for send-only sudo apt install ssmtp

4. Configure sudo geany /etc/ssmtp/ssmtp.conf

5. edit your email address to ‘AuthUser’ and your email password to ‘AuthPass’

6. In your Google Account > Security > Allow unsafe apps

7. bash script for

8. Check ip address

9. Compare with last one found (saved in currentIP.txt)

10. If different update file update log send email

11. if same, update log date?

install apache sudo apt update sudo apt install apache2 -y

web server for activating IR remote control A/C - use like a much simpler Sensibo Speakers - turn on for music from headless KODI running on the Pi TV - eventually reduce volume if too loud? Turn off on timer to limit kids' viewing time? Automate Netflix (turn on tv, put on correct source, volume level, energy saving)

Activate LEDs for backlight - for returning from home at night? for automatic brightness for evening time?

Connect to WiFi network using CLI (SSH)

https://www.ev3dev.org/docs/tutorials/setting-up-wifi-using-the-command-line/ robot@ev3dev:~$ connmanctl Error getting VPN connections: The name net.connman.vpn was not provided by any connmanctl> enable wifi Enabled wifi connmanctl> scan wifi Scan completed for wifi connmanctl> services *AO Wired ethernet_b827ebbde13c_cable wifi_e8de27077de3_hidden_managed_none AH04044914 wifi_e8de27077de3_41483034303434393134_managed_psk Frissie wifi_e8de27077de3_46726973736965_managed_psk ruijgt gast wifi_e8de27077de3_7275696a67742067617374_managed_psk schuur wifi_e8de27077de3_736368757572_managed_psk connmanctl> agent on Agent registered connmanctl> connect wifi_e8de27077de3_41 # You can use the TAB key at this point to autocomplete the name connmanctl> connect wifi_e8de27077de3_41483034303434393134_managed_psk Agent RequestInput wifi_e8de27077de3_41483034303434393134_managed_psk Passphrase = [ Type=psk, Requirement=mandatory ] Passphrase? ************* Connected wifi_e8de27077de3_41483034303434393134_managed_psk connmanctl> quit

Parameters for Python Script To Control XBMC via Web/JSON API

https://forum.kodi.tv/showthread.php?tid=197645

ip = 'localhost' port = '8080' username = 'KodiUserName' password = 'KodiPassword'

Action Method Prarmeters Shutdown System.Shutdown {} Previous Player.GoTo {"playerid":0,"to":"previous"} Next Player.GoTo {"playerid":0,"to":"next"} Party Mode Player.Open {"item":{"partymode":"music"}} Play/Pause Player.PlayPause { "playerid":0}

entire script added to code - read iR codes from remote, make a call to JSON-RPC on localhost

GPIO on LibreElec

this thread gave me a lot of info on making the GPIO work: https://forum.libreelec.tv/thread/1754-problem-installing-pi-tools-addon/

for RPi.GPIO to work in the scipt we need to install it. This cannot be done over shell (ssh) as apt-get pip etc. don't work on LibreElec

1. from Kodi UI, install libreElec addons -> program addons -> Raspberry Pi Tools

2. A file named config.txt exists on the /boot folder. Either edit it directly on the sd (using a different computer) or mount the /flash partition:

mount -o remount,rw /flash

nano /flash/config.txt

It was on a different partition on the microSD card, that wasn't accessible over SSH. I took it out and read it on a computer. Found the file in the root directory. Add these lines to the config.txt file:

dtoverlay=lirc-rpi

dtparam=gpio_in_pull=up

//also suggested to add the pin used: https://forum.libreelec.tv/thread/12262-enabling-gpio-pins/ dtoverlay=gpio-ir,gpio_pin=11

source: https://filter-failure.eu/2015/11/raspberry-pi-2-lirc-with-an-active-low-ir-receiver-with-raspbian-jessie/

3. make sure these lines are added to the top of the python script file (these were not needed when testing on a non-openelec debian distro): import sys sys.path.append('/storage/.kodi/addons/virtual.rpi-tools/lib')

path might be different: sys.path.append('/storage/.kodi/addons/python.RPi.GPIO/lib')

Run on startup

https://forum.kodi.tv/showthread.php?tid=247988 create the file (touch, or just use nano) /storage/.config/autostart.sh then make it an executable: chmod +x /storage/.config/autostart.sh

( python /downloads/ir.sys )&

Get files over SSH

sudo sftp LibreELEC.018.co.il lcd Downloads/ get ir.py

Untested - Rurn wifi on/off (bash script)

https://www.linuxquestions.org/questions/linux-wireless-networking-41/script-to-turn-wifi-on-off-4175564405/

Untested - Run bash script from python (not checked if possible on LibreElec)

https://python-forum.io/Thread-Enable-Disable-Wireless-connection-by-using-python import subprocess result = subprocess.run(["netsh", "interface", "set", "interface", "Wi-Fi", "DISABLED"]) print("FAILED..." if result.returncode else "SUCCESS!")

#Rpi Serial communication via GPIO https://www.in structables.com/id/Read-and-write-from-serial-port-with-Raspberry-Pi/ (will require decoupler - arduino 3v, pi 5v)

Arduino for IR instead of Pi

Arduino will read from IR or buttons, will be connected over serial to Pi Pi will read from serial and make the same JSON calls

https://github.com/z3t0/Arduino-IRremote

expand RPi root partition to full SD card size

http://cagewebdev.com/raspberry-pi-expanding-the-root-partition-of-the-sd-card/

install MPD Headless/commad line music player and MP

thingspeak account

https://thingspeak.com/channels/1088622/private_show

automaticaly mount usb drives

sudo apt-get install usbmount

ncmpcpp - 'gui' for mpd

make sure also alsa mixer is installed change directory for music folder (source)

~ sudo apt-get install -y mpd mpc alsa-utils
~  sudo chmod -R 775 /home/pi/music
~  sudo chown -R mpd:audio /home/pi/music

mpc update mpc list artist sudo systemctl restart mpd

create a playlist (using Add) and play it mpc add 'Pet Shop Boys' mpc play

mount -t auto /dev/sdb1 /media/pendrv

mount automatically:

https://www.raspberrypi-spy.co.uk/2014/05/how-to-mount-a-usb-flash-disk-on-the-raspberry-pi/

1. find UUID of drive ls -l /dev/disk/by-label/ ls -l /dev/disk/by-uuid/

2. create mounting point (folder) sudo mkdir /media/usbMusic sudo chown -R pi:pi /media/usbMusic/

3. Manual mount sudo mount /dev/sda1 /media/usbMusic/ -o uid=pi,gid=pi

4. Auto Mount add this line to file (change the folder and the UUID, and if needed - the filesystem) sudo nano /etc/fstab

UUID=06FF-5262 /media/usbMusic vfat auto,nofail,noatime,users,rw,uid=pi,gid=pi 0

/// ///add line to file: ///sudo nano /etc/fstab ///UUID=06FF-5262 /media/musicUSB vfat defaults,auto,users,rw,nofail ,x-systemd.device-timeout=30 0 0

check ouput device in Alsa mixer

in my case the default was HDMI (0) I changed to Headphones (1) defaults.ctl.card 1 defaults.pcm.card 1 defaults.pcm.device 1

sudo nano /usr/share/alsa/alsa.conf

restarting from scratch

ssh (can be done from the sd card after download and before installation. Pi inital setup looks for a file named SSH in the BOOT partition/directory. just put an empty file there - 'touch ssh' if you're using linux terminal. SSH will be installed automatically for a completely headless setup)

Enter sudo raspi-config in a terminal window. Select Interfacing Options. Navigate to and select SSH. Choose Yes.

sftp

mpd mpc

sudo apt-get install mpd mpc ncmpcpp sudo apt-get install alsa-util

alsa-util

https://www.musicpd.org/doc/html/plugins.html#output-plugins mixer_control NAME Choose a mixer control, defaulting to PCM. Type amixer scontrols to get a list of available mixer controls.

amixer scontrols

output: Simple mixer control 'Headphone',0

how to fill the Alsa audio output hw:0,0 thing with your own settings:

This was by far the most annoying part of the project - to get MPD to output from the headphone jack. AlsaMixer/MPD aren't documneted in a way that helps you understand exactly what should be in the Audio_Output definitions. I hope my example is good enough, but sadly it's not generalised for any system - just showing what worked for me.

JohnT's answer gives a good basic. I'll follow it up with how to find the devices on your system. Use "aplay -l" to get a list of the devices on your system. The hw:X,Y comes from this mapping of your hardware -- in this case, X is the card number, while Y is the device number.

from: https://superuser.com/questions/53957/what-do-alsa-devices-like-hw0-0-mean-how-do-i-figure-out-which-to-use

in my case: sudo nano /etc/mpd.conf

An example of an ALSA output:

audio_output { type "alsa" name "My ALSA Device" device "hw:Headphones,0" # optional

mixer_type "hardware" # optional

mixer_device "default" # optional

    mixer_control   "Headphone"

#"PCM" # optional mixer_index "0" # optional }

mount usb drive

1. create folder to mount to sudo mkdir /media/usbMusic

2. list devices to find out which to mount fdisk -l in my case the usb is /dev/sda1

3. so manual mount by running:

sudo mount /dev/sda1 /media/usbMusic/ -o uid=pi,gid=pi

4. Auto Mount add this line to file (change the folder and the UUID, and if needed - the filesystem) sudo nano /etc/fstab

UUID=06FF-5262 /media/usbMusic vfat auto,nofail,noatime,users,rw,uid=pi,gid=pi 0

allow non root user to shutdown

https://unix.stackexchange.com/questions/109637/command-to-reboot-as-non-root-user

edit /etc.sudoers and add these lines (assuming your user name is martin):

martin ALL=NOPASSWD:/usr/sbin/pm-suspend martin ALL=NOPASSWD:/sbin/reboot martin ALL=NOPASSWD:/sbin/shutdown

///// NOT RELEVANT TO DEBIAN: you can add your user to /etc/shutdown.allow and then run shutdown -a but that one does not work for Debian.

run on strartup (without requiring login)

in file /etc/crontab (sudo nano /etc/crontab) add these lines:

@reboot pi touch crontouchfile.log @reboot pi /usr/bin/python3 /home/pi/serialReader/arduinoReader.py

the first is just to make sure it's working. N.B. /etc/crontab has a different format than other cron files (there are way to many of those and they vary between distros) it has a USER field (I used user pi in above lines)

//Check cron status (will show erros - use to debug) // Add a cron to current user crontab -e

// Edit playlist with text editor (that's the default mpd directory) sudo nano /var/lib/mpd/playlists/bjork.m3u

interrupt based keypad for pi

https://github.com/brettmclean/pad4pi