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    replace a 9v power outage backup sorce

    I foresee smoke on the horizon......
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    Trouble understanding a V+ description on a motor driver

    You could try a basic multimeter. Green layer is the trace and to me it clearly connects to V+ on the right and encircles and connects to V+ on the left as previously pointed out. As they say, if it had teeth it would jump out and bite you.
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    MT3608 boost converter not working

    Not a typical measurement on any meter I've used (regular). Give some detail, do you have any load connected..? You do realise it will only give an output above the level you supply.. Your first link doesn't work. What are you trying to achieve?
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    replace a 9v power outage backup sorce

    9v seems a high level to keep memory however, one can buy a rechargable 9v unit and you would need to build/buy a small trickle charger. Thing is, you are adding more links to the chain of failure points. What is the 24v, AC or DC..?? Simple alternative, memory battery could be like smoke alarm...
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    Microwave detection circuit verification

    Come on now, you know better than that when it comes to copyright infringement, surely.
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    Menu code/buttons problems

    best if you post the full code and a diagram. You can be sure there are those here who will not be "overwhelmed" .
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    MGE UPS 225 Kva Voltage problem

    That is a bit on the large size for most to be commenting on without being on site.
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    Energy storage - alternatives to batteries

    Put the garage at 5,000 ft.
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    Microwave detection circuit verification

    right....so....??
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    Motor controller heating up in certain conditions

    Show your circuit and photos of what you have there.
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    Microwave detection circuit verification

    Siliconchip magazine had a microwave leakage detector way back in 2016 and I think there was an even earlier one. Many commercial units on the market these days also. Why re-invent the wheel..? https://www.siliconchip.com.au/Issue/2016/April/Microwave+Leakage+Detector
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    Crazy connector

    It's a 2 pin din plug used on low voltage electric chairs. You might be lucky to find just the plug alone as they are normally listed to include the power supply unit AND at a rather high cost. https://www.ebay.com.au/itm/384018889794?hash=item59694f3c42:g:SRkAAOSwAxtgAPnz
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    Why do relays struggle to switch high voltage low current loads?

    Ask them I'd say.
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    Home made battery packs

    There are, never the less applications where a relay is a much simpler answer to an application. And no, I don't intend to go into any detail.
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    Home made battery packs

    If you look on battery university it is more than likely they will already have that information. https://batteryuniversity.com/
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    Dometic Portable Ice Maker Model HZB-12SA

    What about power output? Did they "recommend" that also for the distance you require?
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    Dometic Portable Ice Maker Model HZB-12SA

    Perhaps your choice of tx rx are not compatible. Usual to buy them as a pair, saves problems at times especially if the spec sheet does not display all the info or you don't understand it.
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    LED slim tube LED driver replacement

    Usually the cost is prohibitive either with a replacement part (cheapest) or build yourself(expensive) compared to a complete replacement fitting.
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    Help Replacing A Ceiling Fan with a 2 wall switch to single switch light fixture.

  20. B

    Dometic Portable Ice Maker Model HZB-12SA

    Microcontroller digital inputs do not work on current. If the numbers on the diagram are the voltages you are getting with the new parts installed, then that part is ok. 5V no light and 0.33v with light should be working as an input to the micro.
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