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Sariel

Eurobricks Dukes
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Everything posted by Sariel

  1. Sariel
    Sorry for going a bit off the topic, but I found something helpful for those willing to measure speed with GPS. The new Hero 5 GoPro camera has integrated GPS and can record speed while filming, and if you use GoPro's Quik video editor, you can actually put the realtime speed reading on the video itself. Like this:
  2. Sariel
    Nothing is perfect, and GPS is far more accurate than the Lego speed computer, which, again, is a cheap toy made back in the year 2000. Look, the only way to get an accurate reading of RPM with Lego is to use a Mindstorms motor and a Mindstorms brick, but that's a lot of extra weight. Again, it's your choice. I simply suggested something that I think is more accurate, but if you don't like it, it's fine.
  3. Sariel
    Look, I'd love to quit this discussion. If you reject GPS as inaccurate in favor of a $20 Lego toy that's 17 years old now, it's your choice. Personally, I'm sticking with GPS, but to each his own.
  4. Sariel
    I don't know about NZ prices, but it's about $80 in USA. For that price you get: - around $60 worth of PF elements (motors etc.) - around $8 worth of tracks - 300 pieces on top of it Seems like a pretty good deal to me, especially since other sets with remote-control PF stuff sit in the $300+ area.
  5. Sariel
    Don't even ask how it works ;)
  6. Sariel
    It's your choice. I think it's a lot of hassle. If you don't want to use GPS, why not keep things simple: for example, draw marks on a road 10 meters apart and film how fast your car goes from one to the other at top speed, then do the math? This way you don't need to put anything on the car, the camera can simply stand on a side.
  7. Sariel
    Lego speed computer is inaccurate, that's all. It measures speed with a delay, it only measures by certain increments (e.g. by 20 RPM but not 19 RPM) and it often produces wrong results. Try comparing it with other measuring methods and you'll see. I think people will understand that the phone is for measuring speed only and it's not part of your car. The GPS' margin of error is far less than that of the Lego speed computer, which is simply a toy for kids, and you can keep it low by making long runs with your car. When I measure top speed with GPS, I make sure to drive at least 50 meters, ideally 100+.
  8. Sariel
    Oh, I don't know, I had no idea it was this long already. I don't have anything planned and I'm quite busy as it is. Extra cookie for hamsters maybe?
  9. Sariel
    There's also a link to full specs right below the video.
  10. Sariel
    Yes. 51 cm long, as clearly stated in the video.
  11. Sariel
    Not to spoil the fun, but the Lego speed computer is wildly inaccurate. I've seen it give readings different by 20% and more at exactly the same speed. This is not to say that your cars didn't go that fast - it's just that in the future you may want to try something accurate to measure the speed. Personally, I recommend strapping some lightweight Android phone to the car, with GPS enabled and this app running: https://play.google.com/store/apps/details?id=pl.com.digita.BikeComputer&hl=en
  12. Sariel
    Well, to be accurate I would need to set it on fire, so I think I'll pass :)
  13. Sariel
    There's a number of videos showing the inner workings at my FB page: https://www.facebook.com/sarielpl/
  14. Sariel
    I don't pay much attention to what Apple states, they're just re-selling the same product these days :) I had one of Sony Xperias capable of filming at native 4K 4 or 5 years ago already. As for your arguments about 4K being excessive, I remember hearing the same exact arguments about 1080p a couple of years ago. IMHO if you can get a 4K TV today for the same kind of money you paid for a 1080p TV a few years ago, it's a win-win situation. And yes, personally I can see more details at 4K on an 60" screen. Lens matter, of course, but I've heard from video producers that the matrix pixel ration matters no less. 1:1 is ideal. When you're filming at 1080p with a DSLR, what happens is that the camera is filming at 4K or even more, then scaling it down to 1080 and then recording it - inevitably there is a quality loss in form of decreased sharpness, and a risk of artifacts and moire effect. To me, the 4K video image I'm getting from G7 seems noticeably crisper than 1080p - but it may be just more details. Then again, editing a video at 4K quality is a huge pain in the ***. My PC isn't really up to it.
  15. Sariel
    Why do you assume people watch YT videos on mobiles only? 4K laptops and tablets are more and more common. 4K TVs are pretty much a standard and all of them have access to YouTube. I, for one, watched this video on a 60" 4K TV and it was worth it. Also, to turn your question around: why would I NOT want to shoot at 4K if it's possible? Not only it doesn't take away anything from the lower resolutions, it actually improves image quality in case of my camera because at 4K resolution it's using 1:1 matrix pixel ratio. Meaning that the matrix is physically using a 3840 × 2160 pixels area to record the video, so there is no image stretching happening while recording: you record exactly what the matrix "sees". Thus sharper image and better overall quality.
  16. Sariel
    This video was shot mostly with Lumix G7 and a wide-angle lens, but there's also footage from GoPro 4, GoPro 4 Session, and a lot of post-processing.
  17. Sariel
    No. Technic bricks have both the pin holes and studs, so they're they key.
  18. Sariel
    Fixed that, thanks.
  19. Sariel
    I'd say that if the only reason you're building big is to build big, you're doing it wrong. That being said, there are plenty of popular MOCs out there that impress with sheer size and they're pretty great and there's nothing wrong with it. It's good to have some diversity. It's just that at some size level you have to wonder if it's the builder's skill that's impressive, or rather his/her budget.
  20. Sariel
    I have built one model of this coolest APC ever back in 2008 and wanted to improve on it ever since. So finally, 9 years later (gee, I'm old): As usual, photos and some reading: http://sariel.pl/2017/03/aliens-m577-apc/
  21. Sariel
    I applaud this, even if the hamster looks somewhat suspiciously like a goat ;)
  22. Sariel
    42064 B-model, surprisingly functional and playable:
  23. Sariel
    The problem here is that Lego pieces are quite shiny and the green or blue background will reflect on your model, especially if it has smooth sides. This can be mitigated to some degree by shooting with a polarizing filter on your lens, but I'd still recommend a plain white backdrop over that.
  24. Sariel
    That's because of the doors. I can't think of a way to make the roof rounded and allow the doors to open all the way up.
  25. Sariel
    It's not an SBrick wobbling, it's a stack of PF plugs. Both SBricks are deep in the chassis and not visible, nor wobbly. You can see the model driving with all 4 RC motors here starting 3:43:
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