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  1. Martaine2005

    Relay buzzing after transformer change?

    There are AC relays as well. Can you show a photo of the text on your relays?.
  2. Martaine2005

    Power PC speakers from Car Battery

    That module is unregulated and really only suitable for a constant voltage. If using the car battery out of the car, then it’ll be ok. On the other hand, in the car, the voltage could be as much as 14.6V. I’d be inclined to open the speaker and maybe connect your 12VDC adapter directly if...
  3. Martaine2005

    Power PC speakers from Car Battery

    Can you post a photo of the back of the speaker showing the label?. Also, if it is AC, adding a 0.6V drop using a diode will effectively be half wave rectified DC. Incidentally, I do have several PC speakers, one set is AC. Creative labs with a sub. All the rest are DC.
  4. Martaine2005

    What kind of switch is this?

    Hi, they are momentary push switches. Either push to make or push to break (contacts). Some might call them non latching too. Search google images and also include terms like ‘PCB mount’ or ‘chassis mount’.
  5. Martaine2005

    Best Arduino Starter Packaged Kits on Amazon. (also what about "Rasbery Pi"?)

    God damn homies;)
  6. Martaine2005

    Best Arduino Starter Packaged Kits on Amazon. (also what about "Rasbery Pi"?)

    Banggood is a legitimate Chinese company.
  7. Martaine2005

    Speaker output ohmage without information.

    Line level or audio line signal is about 1 Volt. Computers have a line out for external speakers and so do audio mixers (amongst other devices). The most common available speakers today are 8 Ohms. But what has the ‘line out’ signal got to do with speaker impedance?.
  8. Martaine2005

    Powering a Network Aggregator and Starlink in Flight case with a LiFePO4 Battery

    I’ve been watching and waiting too. If I had to guess, the starlink is starving the gateway of current. And/or the boost converter combination.
  9. Martaine2005

    Speaker output ohmage without information.

    What do you mean? Powered with an external amplifier as in ‘passive’ speakers?. Or an onboard amplifier as in ‘active’ speakers?.
  10. Martaine2005

    can the leds be mounted into spray foam insulation

    Usually, two such mounds would be used. One smaller and goes under the main mound. This smaller mound would have a sacrificial cloth on or some kind of paper. Then the foam can be sprayed onto the top mound and fall through until it expands up and out of the larger mound of chicken wire.
  11. Martaine2005

    can the leds be mounted into spray foam insulation

    Agreed. I’ve used it for years too, albeit for its correct use. It does go dark orange over the years but once painted, it doesn’t show. The amount that you have used may sag in very hot conditions. I would recommend using chicken wire for the overall shape and then spray the foam onto it. A...
  12. Martaine2005

    Speed controller on washing machine motor

    That speed controller is probably a ‘dimmer’ circuit. The 4000W rating will be over rated as usual. That said, its max rating is most likely for resistive loads and not an inductive load. For an inductive load, it will probably be 1/3 of that rating. But I could be wrong.
  13. Martaine2005

    Icom 260A service manual

    Ok thanks.
  14. Martaine2005

    Icom 260A service manual

    Didn’t you get it from this thread? Here . The PDF is there.
  15. Martaine2005

    Speed controller on washing machine motor

    ‘Jeremy Fielding’ on YouTube has excellent videos on this very subject. It’s important to know what motor you have, and his videos will help you identify and understand yours. His channel.
  16. Martaine2005

    Comedy Thread

    Just spat my tea out:)
  17. Martaine2005

    can the leds be mounted into spray foam insulation

    Of course you can. To put your mind at ease, power the LEDs on the kitchen table and put the cotton fluff on top. You’ll soon see that nothing happens. You can also put your finger on each LED and only feel a little warmth. If you try this with high power LEDs, you’ll burn your finger. But still...
  18. Martaine2005

    can the leds be mounted into spray foam insulation

    Don’t worry about using spray foam with a total of 5 Watts. Nothing is going to happen.
  19. Martaine2005

    Teensy Arduino Project Looking for Advise

    I think it is now! Sounds like an autonomous drone with plumbing tools on board in prison;)
  20. Martaine2005

    Teensy Arduino Project Looking for Advise

    So far, motors and blades. Blades that spin are no good for navigating tight spaces. Finding a leak in plumbing systems and repair?. Are we talking compression or solder fittings?. Either way, is this vehicle equipped with cameras and wrenches too?. Sounds completely impossible at the moment.
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