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Sources for FLAC Music

Hi! I wanted to start to hoard my favorite tracks in the best possible quality. A lot of stuff is available through Deezer or Tidal i know, but what sources are you guys using when FLACs for particular albums or songs cannot be found on Deezer or Tidal? I wanted to get the Rock n Roll Train song from ACDC in FLAC, but Tidal...

Making a USB desk fan from spare CPU fan

If I wanted to make a USB desk fan from a spare CPU fan (input: 12V, 0.15A), could I just solder a resistor to the positive lead of the USB wire? I plan on getting an adjustable voltage booster, but I was curious if this was possible. I think I would need a 13 ohm resistor for USB 3.0.

ESP32 with multiple cameras

I want to connect five OV2640 cameras via FPC to an ESP32 on a custom PCB. Is this generally possible and does the ESP32 have enough power for this or do I need an ESP32 for each camera? The frames per second are not so important as the cameras will be used as QR code scanners. Which components allow to run so many cameras with...

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