Raspberry Spy
A remote control interface for the Raspberry Pi camera (v2.0) using bash and JavaScript.
Essentially this project is a time-lapse utility, accessible via a browser, to control the camera. The back-end is a pure bash implementation, which uses WebSockets to read and write camera settings, that update interface metadata and change camera parameters in real-time.
Icons from left to right: settings menu, composition grid, last image time, progress bar, interval value, sunrise time, sunset time, disk usage, image count, recording status.
Features overview
- Daytime stop/start - sync your camera's activity to dawn and dusk.
- Time-lapse bracketing - use exposure compensated images sequences.
- Automatic space retrieval - automatically backup and delete local photos.
Camera settings
-
Standard options: these values are according to the picamera values:
Saturation,Contrast,Brightness,Rotation,ISO,White Balance,Dynamic Range,Exposure,File Encoding,Light Metering- .
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Camera Interval (a range slider of seconds and minutes)
-
Image Effects a list of the default effects, applied with the default settings.
none,negative,solarise,sketch,denoise,emboss,oilpaint,hatch,gpen,pastel,watercolour,film,blur,saturation,colourswap,washedout,posterise,colourpoint,colourbalance,cartoon
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BG resize (
10,20,25,33,50,100) amount to resize the background image of the interface. -
Work hours (
Dawn to duskorAlways on)- "Dawn to Dusk" will resort to an external API to determine sunrise and sunset twilight time. Photos saved will between the start and stop time.
- "Always on" will save images continuously.
-
Preview (
trueorfalse) when true images are not saved. -
Bracket (
None,1xEV24,2xEV12,3xEV8,4xEV6) -
"None" - outputs a standard image according to the image settings
- "1" to "4" - will take save bracketed LDR images. The bracketed images will ignore the ISO values and exposure settings, the camera will calculate those settings.
- 1 saves 3 images -24, 0, 24 EV (the highest fstop difference)
- 2 saves 5 images: (separated by 12 stops) -24, -12, 0, 12, 24 EV
- 3 saves 7 images: (separated by 8 stops) -24 -16 -8 0 8 16 24
- 4 saves 9 images: (separated by 6 stops) -24 -18 -12 -6 0 6 12 18 24
- "1" to "4" - will take save bracketed LDR images. The bracketed images will ignore the ISO values and exposure settings, the camera will calculate those settings.
Worth mentioning
- websocketd - is the library required to fulfil the bash WebSocket implementation.
- This project uses version 0.3.1 which needs to be installed separately.
- You can download pre-compiled binaries for your OS from http://websocketd.com/
- Daytime is provided by sunrise-sunset.org API (for sequences between sunrise and sunset)
- Auto-start, after power re-cycle, requires a
crontab @rebootentry - Daily maintenance requires an external
rsyncserver (to backup and delete local images)