Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "Technology Connextras" channel.

  1. 8:30 You could perhaps also try using open flame to get rid of bubbles while the glue/color/water mix is still wet, similar to how epoxy can be cleared with heat application? For small objects, vacuum would be obviously superior method if you have all the tooling needed.
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  2. 31:25 I think your strain relief should pull the outermost plastic of your appliance wire. If there's enough space, simply making a nut out of the appliance wire should be good enough for straing relief. Another good option would be to squeeze the wire between to parts, kind of like a screw actuated grimping jaw holding the outer plastic of the appliance wire.
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  3. Great results. I was expecting that "easy way" would be sandblasting the inner surface.
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  4. I think the biggest problem was to claim any method as best. I think that if you want max quality, you should use a capture method that can capture the original field data and the sampling should be integrating sampling instead of point sampling. Point sampling will output really sharp image but it will have a lot more noise in the captured data. Once you've accurately digitized the original field data, you have all the data anybody can extract from the original analog source and you can use whatever current or future software to improve the rendering. I used to have a Hauppauge analog capture card around year 2000 and it was otherwise perfect but only supported point capture. It was able to digitize 920 pixels for each horizontal line in PAL video signal so it was already above average but point sampling still made it a lot more noisy than better hardware.
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  5. How about using just come kind of container with a vacuum cleaner instead of proper vacuum chamber? A Good vacuum cleaner should be able to produce about –0.3 bar.
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  6. 6:50 I would guess PVA glue mixed with really bright food colorants might just work for color lights. As a bonus, at least the glue used in schools can be slowly melted again in hot water so if this ever yellows, you can pretty easily replace it.
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  7. 26:40 This is a demonstration how huge batteries EV cars actually have.
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  8. I would guess majority of the washed out analog capture comes from the "limited range" vs "full range" mess. Simply because analog signal technically used blanking signals, somebody had a clever idea that digitalized version shouldn't have full 8-bit range from 0-255 either but limit the data to be able to identify the blanking signals from the resulting data. To this date, that kind of logic makes no sense at all in digital domain but you end up with "black" being some value between 16 and 32 in 8-bit range and the image will look washed out unless you stretch the data range back to full 8-bit range per subpixel. (Officially value 16 should be the black but real world results do differ.) In addition to that, analog signal didn't have sRGB color space so you should do color space conversion in addition but that's separate from "limited range" vs "full range" mess.
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  9.  @FishFind3000  Running the car to closest fast charger and loading for an hour will allow you to keep your home going basically forever.
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  10. 37:15 You shouldn't solder wires that go into hot places. In addition, you mentioned that one of the wires was aluminium and you cannot really get regular solder to stick to aluminium. If you really want to weld it, you'd need aluminium-to-copper brazing rods and lots of heat. I think a high quality crimp connector or a screwed connector would be much better option.
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