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  1. Martaine2005

    Help with Casio keyboard not working

    Loving your first ever pic Edd. I feel like we could ALL be related. Apparently, we had millions of siblings that didn't make it.:eek: Martin
  2. Martaine2005

    Isolating constant from flashing signal

    Yes, there are other countries that also drive on the wrong side of the road :D Martin
  3. Martaine2005

    Isolating constant from flashing signal

    Hehe, good ol' US OF A. They spell and pronounce English words incorrectly, drive on the wrong side of the road AND have red turn signals!.:p There is a simple way to do this but......... Is this vehicle being used on the road? And IF you eliminate the brake signal, what other option do you...
  4. Martaine2005

    Isolating constant from flashing signal

    What happens if you are braking and indicating? Surely, the bulb has two filaments? Martin
  5. Martaine2005

    Add antenna to WESTEK RFA-110

    I can't be sure but may be the top left (red) tuned coil is the antenna. These units are probably 433MHz or similar. Be careful tinkering if plugged in, that's a capacitive dropper power supply. I'll wait and leave this to somebody knowledgeable with RF circuits. Martin
  6. Martaine2005

    Add antenna to WESTEK RFA-110

    If you open the unit up, you will see where the existing antenna connections are. I presume you mean the added antenna will be mounted externally on the metal box?. I am not familiar with this set, do you know what frequency it uses?. If its 2.4GHz, you should be ok with an old 2.4GHz router...
  7. Martaine2005

    power supply to 1,5v (clock) AND 3v (LED)?

    FYI Eddie, I have several Remington shaver/trimmer power supplies from car boot, family, friends etc. Ranging from 5V @1000mA and 3.2V @ 1500mA. The beauty of these are they come with over 2.5 meters of flex and a DC jack. They’re also very safe unlike Chinese cheap phone chargers. Martin
  8. Martaine2005

    power supply to 1,5v (clock) AND 3v (LED)?

    Hi Eddie and welcome to EP. There are many ways to do this but a laptop style power supply is completely OTT for your project. Let’s start at the beginning. LEDs can have a forward voltage as low as 1.6V. Have you tried any?. If it’s to illuminate the clock, trying different LEDs in the dark...
  9. Martaine2005

    Replacing a battery charger transformer with a audio transformer can I do it?

    I’d call him Lucky instead of Friday :) Martin
  10. Martaine2005

    Turntable Spinning Fast in Reverse

    Polarity is often overlooked. Most items have a symbol near the DC input jack. Most power supplies also have a symbol on them showing polarity. Either the inside of the jack is positive and the outside negative or vice Versa. Martin
  11. Martaine2005

    Noisemaker Revenge Machine

    That information obviously depends on many factors. That both devices require the same voltage. But most importantly, the amperes required for each device. Using a higher amperage power supply is always a good idea. For example, two devices require 0.5A (500mA) each. Using a 1A power supply...
  12. Martaine2005

    Turntable Spinning Fast in Reverse

    I believe it was the DC 12V power supply connections to the ‘orange and blue’ wires. The OP connected positive to blue and negative to orange, which were then swapped around. (I believe, without re-reading everything again). Martin
  13. Martaine2005

    Noisemaker Revenge Machine

    Let's hope he is being civilized rather than a bad smell and maggots entering your property:eek::eek:. Although I cannot condone your actions, I am glad you sorted it out. Martin
  14. Martaine2005

    2 Q about antennas.

    If it’s airband only, 108 - 137MHz should be about right. Many, many, many DIY ideas out there in internet. Guessing you are UK based as guttering is OUR word. Take into account the GROUND plane, is your guttering metal, cast or plastic?. You’d be far better getting it as high as possible on...
  15. Martaine2005

    Designing a soldering iron for limited dexterity

    Survey completed. Martin
  16. Martaine2005

    Yamaha RX V1900 works but...

    Sounds like current inrush to the power supply. Once the lights have dimmed and the amp is on, turn it off and on again. It shouldn’t dim the lights as the main filter caps should still have some charge. Martin
  17. Martaine2005

    3.5mm jacks

    Do you mean a cable with more than one conductor (wire) inside the insulation (sheath)?. The radio ear piece is mono, are your ear defenders mono or stereo?. The short answer is yes you can add a connector. You can simply ‘extend’ the existing wiring to the ear defenders. but you can buy...
  18. Martaine2005

    3.5mm jacks

    Can you give a link or post a photo of yours?. The air tube is not important here, just the radio connector and anything else connected inbetween the speaker. Does it have a mic or PTT switch inline?. what is the reason for doing this? Martin
  19. Martaine2005

    JBL onbeat xtreme only works when warm.

    Welcome to EP Rick, I have never heard the old trick of putting it in the sun for a while. Although I have heard of putting in a freezer. That said, it sure sounds like a loose connection that is possibly expanding in heat. Either way you’ll need to open the unit and have a real good, close-up...
  20. Martaine2005

    Shure SLX4 Receiver

    Not sure why you can’t buy online in India, perhaps 638-662MHz is illegal?. The receivers are fairly cheap second hand and readily available. You will also need the receiver to change frequency and pair the mics. But for testing purposes, you may be able to use a frequency scanner. My personal...
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