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kedikedi

HN member
Joined
Fri, Sep 20, 2019, 10:13 PM UTC
HN karma
70
Public activity
45 items

About kedikedi

I am a modern day Renaissance man: I make software, I make electronics and I make machines.

I am located in Helsinki, and Google "semih iseri" to find me, or use name.surname at gmail.com to reach me(hint: semih is the name)

Recent public activity

  1. comment
    Comment #45914632

    Turkey did it some years ago (2005). Removed six zeroes and named it something like “new lira”. Then named it back to “lira” after most of the old money is out of circulation. 20 y…

  2. comment
    Comment #44844354

    And if it’s the very first gen of the Leaf, then, as far as I know, they don’t have thermal management for the batteries. So it greatly stresses them both for discharge and charge …

  3. comment
    Comment #44509602

    I think that applies to many other electronics they sell too. I find them pretty well engineered overall. My guess is that it’s because they sell any particular piece of hardware i…

  4. comment
    Comment #42582684

    Interesting approach. I have a feeling that this is intended for sparsely built houses (the typical american housing maybe?) since in a dense European city I’d imagine it would pic…

  5. comment
    Comment #42444572

    You can but it isn’t efficient. You lose (V_in - V_out)*I_led Watts to heat if you use a linear regulator. You might ask why not connect them in series and get the voltage differen…

  6. comment
    Comment #41553464

    They might turn off/block egr which reintroduces exhaust gasses to intake to reduce combustion temperature. The upside of this system is that it reduces NOx emissions, the downside…

  7. comment
    Comment #40254732

    Pretty benign until an idiot holds a small piece of sheet metal in one hand and drills it with the other. Guess how I know :) To my defense, I put a bit of wood between the metal a…

  8. comment
    Comment #40069250

    I use both kinds very frequently so I can comment on this. The main difference is that SLA strength is more uniform and FDM strength is very directional. And the strength of the ou…

  9. comment
    Comment #40069160

    We have multiple form 3 printers at work too, and they are very slow! It takes an hour to automatically fill the resin tank (which I cheat by pouring myself) and supply costs are r…

  10. comment
    Comment #40044441

    Part of the reason is the compliance requirements. You need to pay quite a bit of money to USB-IF if you want to make anything USB and this is recurring as far as I know. There's a…

  11. comment
    Comment #39748137

    Ah, you’re right! I was talking about the “comparable” batteries, assuming them being chemical batteries

  12. comment
    Comment #39711412

    There’s also the self discharge aspect of things: cells lose energy even if you draw no current at all. This is dependent on many things including chemistry, quality, buildup, temp…

  13. comment
    Comment #39607879

    It changes resistance. My dad had an old, full mechanical/hydraulic automatic car and it was an extremely visible feeling from the throttle pedal when it changed gears or when it e…

  14. comment
    Comment #39599132

    The throttle feeling of a cable operated throttle is more about how much air the engine wants to breathe. I’d say it’s kinda still related to rpm, but it might be a completely diff…

  15. comment
    Comment #38990245

    Two things; modern HID or laser or LED headlights should have the auto adjustment, so just jump to the second paragraph if you have one of these. But halogens can be adjusted usual…

  16. comment
    Comment #38777059

    One of mine is microvision, but the other one had a different brand (I don’t remember the brand though). But they are exactly the same machines except the text on them. The VGA acc…

  17. comment
    Comment #38769880

    I have two of the microvision ones and I can tell you the reason: they have to scan to draw and that makes everything look very wobbly. It isn’t something you can clearly see but i…

  18. comment
    Comment #38498077

    I think you’re right. Leaded additive is an octane enhancer to prevent knocking but it’s also good for valve seats and whatnot. That’s the bit what makes it difficult to just switc…

  19. comment
    Comment #38241752

    One side has a magnet, and it firmly attaches the base board (steel). But the other side just has the pogo and is fixed there just by the weight of the thing. It works good if ther…

  20. comment
    Comment #38009092

    Only couple of times per year I drive those kind of distances myself, but I’d say the main benefit comes for “derating”. In other words, you can buy a 900 mile range car, and can t…

  21. comment
    Comment #37147954

    That wooden pipe looks very cool actually :) Do you know when did they make it/installed it? And how did they joined them, more wood?

  22. comment
    Comment #36714088

    I am very much wondering how Oura (the smart ring company) will handle this as the thing is very small. Their current design is fully casted, and practically impossible to do any k…

  23. comment
    Comment #36595379

    Towards the end it says; > the material lasts longer than rubber, and has better abrasion resistance. With rubber tires these both would mean bad grip, I wonder how this material f…

  24. comment
    Comment #36443395

    I think what they meant is that the backup camera screen is embedded in the review mirror. I’ve seen those that it’s kinda like a first surface mirror and you can see the screen on…

  25. comment
    Comment #36125577

    As far as I know something similar is used in Finland, but not with the industrial processes. Some apartments dig a deep hole into the ground, and pump the heat up during the winte…