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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by alchemy

  1. A

    SD slot adapter?

    Ok thank you. I saw that asked elsewhere on the web and few seemed to know what they meant. They kept thinking just a card reader.
  2. A

    SD slot adapter?

    Im not sure if this is the right forum. Does anyone know if there is such a thing as a male plug adapter that would go into an SD slot with maybe a USB or something on the other end so you can record onto an external HD, for example? If not, I wonder why.
  3. A

    DIY home security system

    also, you can put a mirror over any dead space view and view two places with one cam
  4. A

    DIY home security system

    Just to mention, as for cameras, I have used cheap old 8mm camcorders or ones that have a defect other than staying on and able to send the video. They last for years and the pic is the best. The audio beats anything. I run them to an old vcr or rf mod and then 300 feet with rg59 coax. I use...
  5. A

    Advice on timer

    My brother just gave me an idea to just use a temperature switch from the engine. That actually might work very well. A thermostat basically. On at, or above, operating temp, off below, (or lower). I only need any range of 10-60 min delay off after the engine is off.
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    Advice on timer

    Thank you, Those are too advanced for me. My maximum ability stops at replacing things on PC boards and not knowing what they are. I cannot design a PC board. I need something I can plug in, put wires on, or maybe a board Id have to make a case for. Thats probably the most of my ability.
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    Advice on timer

    ok, stupid me, now I see those are model numbers. Im looking them up now, thank you
  8. A

    Advice on timer

    thank you, I dont know how to find that reference. I'll try in the meantime. Is that a post number?
  9. A

    Advice on timer

    Hi all, newbie here! Not an electronics expert but I tinker quite a bit. Does anyone have an idea of something I can use for 12V delay off timer or even of another way I can do it? Its for an 80.00 dash cam. I want it to keep power to it (stay on) for 10-60 min. (15 -20 min ideal) after I...
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