Difference between revisions of "Timelapse Camera"
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| + | |||
| + | == Raspberry Pi Time Lapse Camera == | ||
| + | |||
| + | The following Python script will capture a picture from the Raspberry Pi camera every time it is called. The filename of the picture will be date and time stamped and saved to the '/home/pi/pictures' folder. | ||
| + | |||
| + | <pre> | ||
| + | #!/usr/bin/env python | ||
| + | |||
| + | import os | ||
| + | import time | ||
| + | import commands | ||
| + | from datetime import datetime | ||
| + | |||
| + | d = datetime.now() | ||
| + | |||
| + | initYear = "%04d" % (d.year) | ||
| + | initMonth = "%02d" % (d.month) | ||
| + | initDate = "%02d" % (d.day) | ||
| + | initHour = "%02d" % (d.hour) | ||
| + | initMins = "%02d" % (d.minute) | ||
| + | |||
| + | filePath = '/home/pi/pictures/' | ||
| + | fileName = time.strftime("%Y-%m-%d_%H%M.jpg"); | ||
| + | fullPath = filePath + fileName | ||
| + | cameraCommand = 'raspistill -o ' | ||
| + | fullCommand = cameraCommand + fullPath | ||
| + | |||
| + | os.system(fullCommand) | ||
| + | </pre> | ||
| + | |||
| + | To capture images at regular intervals the script can be loaded as a cron job. | ||
| + | |||
| + | To edit the cron table type: | ||
| + | <pre> crontab -e </pre> | ||
| + | |||
| + | The format of the cron table is: | ||
| + | <pre> m h dom mon dow command </pre> | ||
| + | |||
| + | where m = minute past the hour, h = hour of the day, dom = day of the month, mon = month of the year and dow = day of week. So to run a script every day at 0735 hours would look like this | ||
| + | |||
| + | <pre>35 7 * * * script_name.py </pre> | ||
| + | |||
| + | For the timelapse camera the crontab was configured to run the script every 10 minutes. | ||
| + | |||
| + | <pre> | ||
| + | crontab -e | ||
| + | </pre> | ||
| + | |||
| + | Add the following line to the bottom of the text file. | ||
| + | |||
| + | <pre> | ||
| + | 0,10,20,30,40,50 * * * * python scripname.py | ||
| + | </pre> | ||
| + | |||
| + | Save the file. | ||
| + | |||
| + | To check the contents of the cron table type. | ||
| + | <pre> | ||
| + | crontab -l | ||
| + | </pre> | ||
| + | |||
| + | You should see the script in the table. | ||
Latest revision as of 03:27, 16 May 2015
Raspberry Pi Time Lapse Camera
The following Python script will capture a picture from the Raspberry Pi camera every time it is called. The filename of the picture will be date and time stamped and saved to the '/home/pi/pictures' folder.
#!/usr/bin/env python
import os
import time
import commands
from datetime import datetime
d = datetime.now()
initYear = "%04d" % (d.year)
initMonth = "%02d" % (d.month)
initDate = "%02d" % (d.day)
initHour = "%02d" % (d.hour)
initMins = "%02d" % (d.minute)
filePath = '/home/pi/pictures/'
fileName = time.strftime("%Y-%m-%d_%H%M.jpg");
fullPath = filePath + fileName
cameraCommand = 'raspistill -o '
fullCommand = cameraCommand + fullPath
os.system(fullCommand)
To capture images at regular intervals the script can be loaded as a cron job.
To edit the cron table type:
crontab -e
The format of the cron table is:
m h dom mon dow command
where m = minute past the hour, h = hour of the day, dom = day of the month, mon = month of the year and dow = day of week. So to run a script every day at 0735 hours would look like this
35 7 * * * script_name.py
For the timelapse camera the crontab was configured to run the script every 10 minutes.
crontab -e
Add the following line to the bottom of the text file.
0,10,20,30,40,50 * * * * python scripname.py
Save the file.
To check the contents of the cron table type.
crontab -l
You should see the script in the table.
