Just FYI, in case you, like me, are trying to build a digital system to play videos originally ripped from VHS tapes. Many of these tapes are recorded with "copy protection", known by the brand name "Macrovision". This system involves putting out-of-spec signal levels into the vertical blanking interval of the video signal. Somehow, old-school VHS players -- even if they don't "know about" the copy protection -- are still able to play these tapes, but if you try to copy the signal through the patch cables to another recorder (such as an AV-to-USB converter cable), the irregular sync signals either cause the video to be unusably erratic, or in many cases, the capture software recognizes the Macrovision and refuses to record it (even though it displays it on the screen!). The solution is to pass the video signal through something which breaks down the signal and re-constitutes it, with freshly-created sync pulses. I'd have thought this would be t...
booting Debian... I built a plywood "chassis" (bottom and back panels), with finished pine front panel. Black steel top cover is scavenged from some old piece of audio or video equipment. Here you can see the poplar reinforcement beam I had to fit into the metal cover, so that it would carry the weight of a big monitor on top without bending excessively. Each button presses one of the microswitches, which ground the GPIO lines which are otherwise pulled high to 3.3v, using the 2.2k resistors visible in the foreground. The boards holding the red & blue LEDs can be seen at the top, spaced in between the three button assemblies. The LEDs shine upon the paper liners, which are visible from the front through the wide gaps around each button shape. This forms a gradient of diffuse purple light, coming through the cracks. You can see the folded sheet-aluminum heatsink which is superglued to the top of Pi CPU chip. Not exactly "up to code", but gets rid of the...
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