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  1. (*steve*)

    Issue in BLDC motor

    No, you need the opposite of a delay. You need to anticipate the position of the motor. Since I don't know how you're sending the position of the motor, it's pretty hard to be other than quite vague.
  2. (*steve*)

    Magnifying lens help needed pls.

    Try a 50mm lens with a maximum aperture of f/2 or better (better is a smaller number)
  3. (*steve*)

    Issue in BLDC motor

    When you get the position, fudge it to say the motor is a little further advanced when the motor is running at high speed.
  4. (*steve*)

    Looking for portable projector under $500

    Perhaps you should try a site that specializes in consumer electronics. Whilst someone here may be able to help you, we're probably more useful if you have one that no longer works :-)
  5. (*steve*)

    Building a New Fish Tank Stand

    100A? Are you sure? Depending on where you are in assume 10A would be a more standard available current, and way more than you need. If you plug it into a mains outlet it will go via a breaker in the main panel. If you're doing more than hiding standard wiring and a pet board (i.e. if you're...
  6. (*steve*)

    Pickit 3 vs Arduino uno

    I'm running 64 bit Linux on the desktop and have never had an issue with drivers. Having said that, I'm neither a gamer nor so pure that I won't load drivers with proprietry binary blobs. I find that a bit of googling, or asking "does it run under Linux" is sufficient to avoid most problems...
  7. (*steve*)

    555 timer smd

    When designing a board which uses parts you haven't used before, it always pays to very carefully check the footprint. This same thing happened to a colleague who designed a very nice board only to find that what he thought was a sot-23 turned out to be a sot-323. If you watch eevblog...
  8. (*steve*)

    problems with HMC253

    It's amazing that we didn't spot that on the schematic you provided!
  9. (*steve*)

    Issue in BLDC motor

    If the problem is latency in your code (i.e. poor, inefficient coding) then you can either fix the code or you can change your code to assume that the sensor position is placed a few degrees further around in the direction of rotation of the motor. Without any further information, and presuming...
  10. (*steve*)

    red led in smd module

    Maybe you've destroyed some of the LEDs. These don't already to be addressable LEDs, so I'll ignore that as a possibility. When you have killed, or nearly killed, a LED then you often find they either don't come on immediately, it require a higher current to turn on, or are unusually dim...
  11. (*steve*)

    The whole reason I am here... :)

    Can you confirm that your board looks the same as those shown in the images earlier in this thread? In post 12, Kris suggested that a mosfet (not a monster!) was likely the problem (which is exactly what I was thinking after reading this thread again). Kris is no longer here to assist, but I...
  12. (*steve*)

    Series Parallel or Parallel Series?

    It's a lot easier to manage the charge/discharge cycle if cells in parallel are placed in series.
  13. (*steve*)

    Thesis Titles

    Did you have something in mind when you chose this topic?
  14. (*steve*)

    I thought I'd measure the leakage current of a few caps

    Lots. Moving my arms caused the meter to go wild :-) And at the more sensitive end of the measurements there was an offset that I had to subtract, with significant low frequency noise on top of that.
  15. (*steve*)

    Help me understand a symbol

    Those things are connectors. They are where the LED (module?) plugs in.
  16. (*steve*)

    Pickit 3 vs Arduino uno

    Some important notes Pickit 3 is a programmer. Arduino is a platform that encompasses the programming ide, the method of programming, and the target device itself. The compression is a bit like comparing a spark plug to a bus. Now, the pickit 3 is a very good spark plug (don't get me wrong)...
  17. (*steve*)

    Who gets there first!

    On second thoughts, a race to a specific distance makes more sense. That way you simply count revolutions of the wheel and see who gets to a particular count first.
  18. (*steve*)

    Who gets there first!

    I would measure the frequency. There are several analog ways of doing that. The main issue is component tolerances, because these may cause one circuit to read higher than the other. A digital circuit that waits until it sees more than a certain number of pulses in a given time (most easily...
  19. (*steve*)

    555 timer smd

    If you've designed a board for a through hole sized component (presumably without holes in your board) then the simple answer is to take a dip package and carefully bend the ends of the leads so they will sit flat on the board. If it's just that you designed the pads for a wider chip, then you...
  20. (*steve*)

    problems with HMC253

    Presumably the signal doesn't swing outside the bounds of gnd and vdd. I note that disconnected outputs are internally terminated to 50Ω to reduce crosstalk problems and to maintain a correct impedance. Does your signal source have a 50Ω impedance?
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