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  1. BobK

    Underwater Help

    Then save yourself a lot of trouble by using 0 Amps. Bob
  2. BobK

    Restoring a FOXX FUZZ-WAH

    Huh? Never used an Arduino. What you posted is a schematic. Here is what a wiring diagram looks like. https://en.wikipedia.org/wiki/Wiring_diagram Bob
  3. BobK

    Simulate the software before flashing

    And it's free! Bob
  4. BobK

    WiFi to serial TTL project

    I expect both are active, one being TTL levels, the other being RS-232 levels. A link to a datasheet would help us confirm that. Bob
  5. BobK

    Restoring a FOXX FUZZ-WAH

    What do you expect a "wiring diagram" to show that a schematic does not? If you are talking about PCB layout, that does come into play in some circuits, but all connections are shown in the schematic. Bob
  6. BobK

    LED project, heat dissipation

    Okay. The datasheet shows a pattern for a stripe to connect to the heat tab on the bottom of the LEDs and vias to carry away the heat. These would go to another side of the board which is solid copper except for the vias. So you will need a double sided board with vias. Then the copper on the...
  7. BobK

    LED project, heat dissipation

    Okay. What is the purpose of this? If it is not for illumination purposes, 24 x 150mA is a lot of power. Bob
  8. BobK

    LED project, heat dissipation

    You should get one of the many LEDs / COB modules that are already fastened to a metal plate suitable to be fastened to a heat sink. Bob
  9. BobK

    Restoring a FOXX FUZZ-WAH

    Are you saying one side of each of these components is floating, i.e. has no connection? Show us a circuit. Bob
  10. BobK

    Stream Video

    Get an Amazon firestick. Bob
  11. BobK

    Dryer's heat fluctuates?

    And don't forget that the servants can bring them in to the best of houses. Bob
  12. BobK

    basic electronics question: types of oscillators

    A PLL multiplier works like this. You have an input frequency, generally from a crystal oscillator. You also have a voltage controlled oscillator that operates at a much high frequency. And you have a digital divider. The phase locked loop locks the high frequency of the voltage controlled...
  13. BobK

    need help with voltage

    You are still not making much sense. What is your boosted output driving that requires 5A at 12V? Bob
  14. BobK

    Challenging task

    This question cannot be answered without knowing what processor you are talking about. The PIC12F, 16F series, for example, cannot access the return address on the stack. Bob
  15. BobK

    basic electronics question: types of oscillators

    The clock going into the processor is a lot lower, but it is multiplied internally by a phase locked loop (PLL) and it is the internal clock frequency of the processor chip. I doubt that there is much radiated at that frequency since the chip itself is not much like an antenna. Bob
  16. BobK

    I need help to modify a design for LED studio lights...

    The panels run off DC. They need an AC adapter to run off AC just like so many consumer electronic devices. Bob
  17. BobK

    basic electronics question: types of oscillators

    Ah memories... When I was 19, summer of 1971, I was an intern at a U.S. army research laboratory. We had a Wang programmable desk calculator. This thing was about the size and weight of 3 typewriters. I discovered that an AM radio would pick up audio at the frequency of any loop it was...
  18. BobK

    How do you use a 12v 10a capacitor as a momentary backup battery for bridge

    He already has them diode or'ed. The only question is which one would dominate if 2 or 3 are connected. Since they are or'ed, he is correct is saying that all he needs is make before break to make it work. Bob Bob
  19. BobK

    Mosfets in parallel

    The '555 has plenty of power to turn on the MOSFET, they need almost no power, they are voltage driven. But in the circuit you are using, it is the 1K resistor that supplies a positive voltage to the MOSFET. Depending on the frequency the '555 is running at, this might be too high. Why are...
  20. BobK

    Why would sections of an RGB LED string freeze animating after 30 mins?

    I suspect it's a timing problem in your code. I was going nuts trying to get WS2812 strings to work. The spec said that it would reset at 150us in the low state. With a bit of debugging I found that they actually they reset with somewhere between 5 and 6 us pulse of low! An unexpected reset...
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