2 # Simple sleep monitor (Harvie 2012)
4 # You probably have soundcard with one output and input
5 # Take PIR motion sensor from security system
6 # Use PIR to switch connection between left channels of output and input (tips of 3.5mm jacks)
7 # Connect grounds of these two together (maybe you will not need it - depending on your soundcard)
10 # Use alsamixer and some GUI recorder (like audacity) to tune volume to some usable level
11 # Place PIR facing to your bed and go sleep
15 out
=/tmp
/sleeplog-
"$(date +%F_%T)".txt
16 graphout
="${out%%.*}.png"
18 killall speaker-test
&>/dev
/null
19 speaker-test
-t sine
&>/dev
/null
&
22 bash .
/sleepstats.sh
"$out" &>/dev
/null
&
25 lastdate
="$(date +%s)"
31 #trap 'kill -9 $(jobs -p);' SIGINT
33 while getopts "sg" OPT
; do
34 test "$OPT" == 's' && screen
=true
;
35 test "$OPT" == 'g' && graph
=true
;
38 echo "Writing log to: $out";
39 $graph && echo "Writing graph to: $graphout"
41 arecord | .
/goertzel
-n i
-q -l c
-t $tresh -d 4 |
while read line
; do
43 time="$(echo "$line" | cut -f 1)"
44 level
="$(echo "$line" | cut -f 2)"
45 test "$level" -gt "$tresh" && state
=false || state
=true
46 $state && statenum
=1 || statenum
=0;
47 $state && statename
='MOTION!' || statename
='Nothing';
49 printf "%.2f\t %s %s %d" "$time" "$date" "$(date '+%F %T')" "$statenum"
52 after
=$
(( $date - $lastdate))
53 printf " (%s %3d After %4d secs)\n" "$statename" "$level" "$after";
57 $screen && xset dpms force off || true
;
59 $screen && xset dpms force on
;
61 $graph && .
/sleepplot.sh
"$out" "$graphout" &>/dev
/null
&
63 #Prepare invariants for next round
66 kill $
(jobs -p); sleep 0.2
70 .
/sleepplot.sh
"$out" "$graphout" &>/dev
/null
71 echo "Your graph: $graphout"