Recent content by hevans1944

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  1. hevans1944

    would this mini Field generator work - Link in

    I have a lot of "free energy" produced by 110 solar photovoltaic panels, but only when the sun is shining here in Florida. I am paying monthly for the credit union loan that financed the panels and a new raised-rib steel roof on which they are mounted, so only the sun's energy is free. It costs...
  2. hevans1944

    Suggest device for logging AC current?

    A Mooshimeter will provide a Bluetooth wireless cell phone display. Just had a clamp-on AC current probe.
  3. hevans1944

    Changing USB Powered Security Cameras to AC 120

    Please report back how you solved your problem. I, too, have motion-detecting outdoor flood lights and a couple of Wyse "cube cams" that operate from a USB charger block. I would like to mount the Wyse camera outside, below the flood lights, to determine what is causing them to trip on at...
  4. hevans1944

    Wanted: MOTRONIC DIGITAL DC MOTION CONTROLLER / SOFT STARTER

    It appears, as we say here in the States, that you are SOL on your quest. I asked Grok 4.5 for help and copied its reply below. I also uploaded the two images you provided in the original post (always a good idea to do that!) and Grok appeared to find them useful. Note that Grok did offer some...
  5. hevans1944

    I Was Lost, But Have Been Found Again

    I "bookmarked" ElectronicsPoint.com a few years ago. Still seems to work, but I don't visit here much anymore...
  6. hevans1944

    RF-ID advice needed

    @collectors: What is your experience with electronics? Are you looking for a plug-and-play commercial off-the-shelf (COTS) solution? Or are you willing to collect "stuff" and assemble what you want? The latter approach has many DIY routes that don't require that you immerse yourself in arcane...
  7. hevans1944

    Electronic device/solution idea

    Best idea I can think of is to use Darwin Adverse Selection to remove and/or prevent repeat offenders until the gene pool has been locally cleansed. My wife, for example, has a nine millimeter "solution" she has been trained to use, but she is also savvy enough to realize there are some...
  8. hevans1944

    power

    PCB design often (always, actually) occurs post circuit design, mainly because it is difficult if not impossible to layout component pads and connections without knowing what the components ARE and HOW they are connected, Some of us are good at circuit design, and some of us are good at turning...
  9. hevans1944

    Newbie Advice Needed Please

    Hmmm. Yet another drive-by poster who is only looking for a "quick answer" and is unwilling to enter into a discussion. If I were writing the software for these forums, I would automagically suspend any account that asks a question and then provides no further interaction. Comments created by...
  10. hevans1944

    RF-ID advice needed

    The key parameter that you need is the position of the train: "...when a train enters & leaves an area", An RF-ID will NOT accomplish this. At best, it will recognize the presence of the train, not its position entering OR leaving an area. I would suggest installing optical sensors at the...
  11. hevans1944

    issue with homemade DC motor + hall effect sensor

    The A3144 has an open-collector NPN transistor output. This needs to be directly collected to the MOSFET gate input and pulled up with a resistor connected directly to the +5VDC supply. That will guarantee there will be enough voltage to drive the MOSFET fully into conduction. Have you made any...
  12. hevans1944

    JK Flip-Flop Toggles Twice from One Button Press

    I just now found one of my missing "round tuits" and read the paper linked to in @Harald Kapp's first response. Very nice analysis of the switch de-bouncie problem. including software solutions. Ignore the software approach if at all possible and use the RS flip-flop instead. Don't waste...
  13. hevans1944

    JK Flip-Flop Toggles Twice from One Button Press

    The only "bullet-proof" way to de-bounce a manually-operated switch is to use a SPDT switch wired to control a simple set/reset flip flop. Some J-K flip-flops have separate set and reset inputs that can be used to implement a set/reset flip-flop. If you use one of these, disable the clock and...
  14. hevans1944

    Comedy Thread

    @Delta Prime: Technically, with two front wheels and one rear wheel, your pedal bicycle is a tricycle.
  15. hevans1944

    Comedy Thread

    In the early 1970s I cudn't even spull inga-near, but now I are one (BEE, 1978, University of Dayton)
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