kirsle/Motivational Speech Alarm Clock.md

## crontab
# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h  dom mon dow   command

30 6 * * 1,2,3,4,5,6 /home/kirsle/playlist.sh

## killall.sh
#!/bin/bash

echo Wait an hour to kill omxplayer
sleep 3600

/usr/bin/killall playlist.sh
/usr/bin/killall omxplayer
/usr/bin/killall omxplayer.bin

## Motivational Speech Alarm Clock.md

      
    Raw
  

              Motivational Speech Alarm Clock.md
            
          
    Motivational Speech Alarm Clock

This is the code I used to make an alarm clock out of a Raspberry Pi (model 1 B+, 512MB RAM) that plays motivational speeches
at 6:30 in the morning to get my ass out of bed.
At first I was using a CLI YouTube client, but it would hang after a while due to not running on an interactive console
(being launched by crond), and the audio support on Pi's have always been somewhat flaky.
I ended up using youtube-dl to pre-download a playlist and using omxplayer for its hardware-accelerated decoding
support. Works pretty well, except omxplayer has no support for things like "playlists" or "shuffling" so I needed
some bash scripts to help me out.
Download a Playlist

Example:
$ youtube-dl --ignore-errors 'https://www.youtube.com/watch?v=v13H1vVzW0U&list=PL_jAJinh0XEdy53PBxGTTo-9nGxfkzSS9'
Then I moved all the *.mkv files to a flash drive attached to the Pi.

  
## playlist.sh
#!/bin/bash

# Configure this to your folder full of speeches.
VIDEOPATH="/mnt/cruzer/speeches"

# This makes the alarm clock stop after 1 hour, could probably
# have been defined as a bash function, but is a separate script
# here. The path would have to change for your $HOME.
/home/kirsle/killall.sh &

# Shuffle the file list and run them in series with omxplayer
IFS=$(echo -en "\n\b")
for file in $(ls -1 $VIDEOPATH/* | sort -R); do
	/usr/bin/omxplayer --no-keys "$file"
done
	# Edit this file to introduce tasks to be run by cron.
	#
	# Each task to run has to be defined through a single line
	# indicating with different fields when the task will be run
	# and what command to run for the task
	#
	# To define the time you can provide concrete values for
	# minute (m), hour (h), day of month (dom), month (mon),
	# and day of week (dow) or use '*' in these fields (for 'any').#
	# Notice that tasks will be started based on the cron's system
	# daemon's notion of time and timezones.
	#
	# Output of the crontab jobs (including errors) is sent through
	# email to the user the crontab file belongs to (unless redirected).
	#
	# For example, you can run a backup of all your user accounts
	# at 5 a.m every week with:
	# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
	#
	# For more information see the manual pages of crontab(5) and cron(8)
	#
	# m h dom mon dow command

	30 6 * * 1,2,3,4,5,6 /home/kirsle/playlist.sh
	#!/bin/bash

	echo Wait an hour to kill omxplayer
	sleep 3600

	/usr/bin/killall playlist.sh
	/usr/bin/killall omxplayer
	/usr/bin/killall omxplayer.bin
	#!/bin/bash

	# Configure this to your folder full of speeches.
	VIDEOPATH="/mnt/cruzer/speeches"

	# This makes the alarm clock stop after 1 hour, could probably
	# have been defined as a bash function, but is a separate script
	# here. The path would have to change for your $HOME.
	/home/kirsle/killall.sh &

	# Shuffle the file list and run them in series with omxplayer
	IFS=$(echo -en "\n\b")
	for file in $(ls -1 $VIDEOPATH/* \| sort -R); do
	/usr/bin/omxplayer --no-keys "$file"
	done