Raspberry Pi project, digital Super 8 hack скачать в хорошем качестве

Raspberry Pi project, digital Super 8 hack

Digital Super 8 project Proof of concept The Bolex 155 Super is a very high quality, Swiss made super 8 camera from 1965. Parts used Bolex 155 super 8 cine camera Raspberry Pi 4B 2 Gb Raspberry Pi HQ Camera Lipo battery HAT-QC-LIPO-WB (I wouldn’t recommend this one) Tools Dremel type tool (Black and Decker RTX) Rotary cutting tool with fiber disc. Small slot screw drivers. Small pliers. Raspberry Pi HQ camera remove the lens mount remove IR-UV cut filter from the mount and carefully glue over the sensor. Bolex 155 Camera Remove AA battery holders Remove the cartridge back plate and drive gears Remove the printed circuit and all wiring (if the light sensor/aperture still works it maybe be useful to retain). Reinstall the door latch post. Remove the film top box. Remove the plate holding the film gate. Cut of the film gate and all metal obstructions protruding up from the plate. Remove the shutter to expose the lens. I just pulled off the circular shutter blade and left the mechanism. Make the opening in the top plate wider to expose the full sensor and allow room for adjustment. *The film gate is smaller than the Sony IMX477 sensor. The exposed negative of super 8 film has a diagonal of 7.043mm (4.01 x 5.79mm) whilst the Pi HQ sensor has an image diagonal of 7.857mm. The image circle from the lens is large enough to just about cover the larger sensor, there is a bit of shade in the corners. The base of the film top box needs to be ground wider as it is narrower than the camera sensor PCB. In order to center the sensor I had to fully cut through the backside of the film box. This is essential as the PCB is considerably wider than the original super 8 cartridge. The camera sensor is also centrally located on the PCB board, where as the film gate on the cartridge is off center. Rasberry Pi Setup A headless installation using VNC View on an android phone to operate the video functions. Raspcontroller was also added to the phone. The camera viewer in Raspcontroller is realtime and shows the view through the camera even when not recording. This was invaluable for adjusting the position of the camera sensor for infinity focus. The camera sensor needs to be set at the same infinity focus point as the viewfinder so that the camera can be manually focused without a monitor or phone screen. Video Recording I use raspvid with VNC and open a terminal window For an authentic Super8 feel try recording at 18 frames per second: raspivid -t 10000 -o video_%c.h264 -b 2500000 -f 18 This records a 10 second clips to a new file name with time and date to avoid over recording previous clips. If this is too flickery for you 24 fps is a good compromise that still gives a vintage movie look without the sterile feel of a higher frame rate. The current implementation is a very rough hack and future updates may include: • Install a physical switch to run a script to start and stop the video recording. • Get a better battery Hat. • Connect through a phone mobile hotspot to save the video clips to google drive. • Hack the camera to access the aperture blades for manual adjustment.