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Merge pull request #2798 from makermelissa/main

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Update Timelapse Camera dest folder and backup original script
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Anne Barela 2024-05-01 14:30:28 -04:00 committed by GitHub
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2 changed files with 54 additions and 1 deletions
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2
Wearable_Time_Lapse_Camera/timelapse.py
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@ -23,7 +23,7 @@ INTERVAL = 15 # Time between captures, in seconds
WIDTH = 1280 # Image width in pixels
HEIGHT = 720 # Image height in pixels
QUALITY = 51 # JPEG image quality (0-100)
DEST = "/home/pi/timelapse" # Destination directory (MUST NOT CONTAIN NUMBERS)
DEST = "/boot/timelapse" # Destination directory (MUST NOT CONTAIN NUMBERS)
PREFIX = "img" # Image prefix (MUST NOT CONTAIN NUMBERS)
HALT_PIN = board.D21 # Halt button GPIO pin (other end to GND)
LED_PIN = board.D5 # Status LED pin (v2 Pi cam lacks built-in LED)

53
Wearable_Time_Lapse_Camera/timelapse.sh Normal file
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@ -0,0 +1,53 @@
#!/bin/sh
# Timelapse script, because timelapse options in raspistill don't power
# down the camera between captures. Script also provides a camera busy LED
# (v2 cameras don't include one) and a system halt button.
# 'gpio' command requires WiringPi: sudo apt-get install wiringpi
# Limitations: if DEST is FAT32 filesystem, max of 65535 files in directory;
# if DEST is ext4 filesystem, may have performance issues above 10K files.
# For intervals <2 sec, better just to use raspistill's timelapse feature.
# Configurable stuff...
INTERVAL=15 # Time between captures, in seconds
WIDTH=1280 # Image width in pixels
HEIGHT=720 # Image height in pixels
QUALITY=51 # JPEG image quality (0-100)
DEST=/boot/timelapse # Destination directory (MUST NOT CONTAIN NUMBERS)
PREFIX=img # Image prefix (MUST NOT CONTAIN NUMBERS)
HALT=21 # Halt button GPIO pin (other end to GND)
LED=5 # Status LED pin (v2 Pi cam lacks built-in LED)
prevtime=0 # Time of last capture (0 = do 1st image immediately)
gpio -g mode $HALT up # Initialize GPIO states
gpio -g mode $LED out
mkdir -p $DEST # Create destination directory (if not present)
# Find index of last image (if any) in directory, start at this + 1
FRAME=$(($(find $DEST -name "*.jpg" -printf %f\\n | sed 's/^[^1-9]*//g' | sort -rn | head -1 | sed 's/[^0-9]//g') + 1))
while : # Forever
do
while : # Until next image capture time
do
currenttime=$(date +%s)
if [ $(($currenttime-$prevtime)) -ge $INTERVAL ]; then
break # Time for next image cap
fi
# Check for halt button -- hold >= 2 sec
while [ $(gpio -g read $HALT) -eq 0 ]; do
if [ $(($(date +%s)-currenttime)) -ge 2 ]; then
gpio -g write $LED 1
shutdown -h now
fi
done
done
OUTFILE=`printf "$DEST/$PREFIX%05d.jpg" $FRAME`
# echo $OUTFILE
gpio -g write $LED 1
raspistill -n -w $WIDTH -h $HEIGHT -q $QUALITY -th none -t 250 -o $OUTFILE
gpio -g write $LED 0
FRAME=$(($FRAME + 1)) # Increment image counter
prevtime=$currenttime # Save image cap time
done