Recent content by ratstar

  1. ratstar

    Handling high motor stall currents

    If you could measure the velocity of the motor, you need to cut out the battery when the velocity is low. Would a constant current circuit work for back emf from dc motors? Its actually not resistance load, its actually back generating out from the motor, but would it work anyway?
  2. ratstar

    Anyone here ever programmed an FPGA?

    oops my mistake. It would be cool if you could tho, just look at how cruddy autorouting is on a PCB designer, it would be just as bad.
  3. ratstar

    Anyone here ever programmed an FPGA?

    I know a bit more about it now. I think putting the route in yourself manually would be the best, letting the software route for you is like trusting someone on the front of a motorbike. coolest video-> That guys machine is parallel powered per pixel, so it would have a massive frame rate...
  4. ratstar

    Need a new multimeter - any thoughts

    Second hand multimetres are all u need and sometimes they pack more features than the new ones. Any multimetre will do the job for you, even limited ones can still be good. If looks like a cheap plastic little toy, it can still do the job for you. Maybe you look even cooler that way. Saying...
  5. ratstar

    Advice on linear actuators ? Length of strong strokes per second ?

    Sounds like it would be good for a practical joke. :) Technology in general is good for that.
  6. ratstar

    Advice on linear actuators ? Length of strong strokes per second ?

    Ur idea is cool. U could get really software savvy with that and use computer vision to do the localization and mapping, or use an accellerometre.
  7. ratstar

    Advice on linear actuators ? Length of strong strokes per second ?

    Can u make a little crank? then all u need is a dc motor. Do a rotational to translational, the stroke can be as long as u build it for and itll be pretty fast and strong.
  8. ratstar

    Amazing and challenging problem!

    Its a nice problem, but I guess everyone here likes working on real applications, not just solving quizzes.
  9. ratstar

    Supercapacitors anyone?

    sounds like a job for a pull down resistor? But u wouldnt want to waste current from the battery, cause then the peripherals would never get power.
  10. ratstar

    Anyone here ever programmed an FPGA?

    Cool what did u implement? I might be completely wrong, but they look more cost effective than GPU's for raw framerate performance, but Ive yet to see how many logic blocks im going to take up, I havent actually even finished the software version of what i'm putting into it.
  11. ratstar

    Supercapacitors anyone?

    Hey Pootler, does your name come from your car, or your computler? =)
  12. ratstar

    Anyone here ever programmed an FPGA?

    Ok, I'm ready to start simulating, but I dont know what simulator to get. Id like it to be VERILOG. but I dont know what program to get, Bertus can u help me plz?
  13. ratstar

    Flexible PCBs

    you can even make flexible monitors, lcd screens are made flexible all the time, I like it too, ultimate flatness! =)
  14. ratstar

    Anyone here ever programmed an FPGA?

    $2000 = 355k CLB's... (configurable logic blocks = estate.) and actually probably is about the same cost effectiveness as GPUS, might be slightly better, but not by much. if it were 355meg CLB's for $2000- then it would be winning by a mile. but will get back about that, I'm only at the...
  15. ratstar

    Anyone here ever programmed an FPGA?

    I was watchin Felix's magic FPGA tutorials. and it actually looks to me like they are better than GPUs by a mile... just need to wait a bit... I feel a bit bad that I wasted my whole life with GPUS right now... *face palm* It looks to me i can get a $100 FPGA do better than a GTX3080ti...
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