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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 andrew8485

  1. A

    First project

    sorry, i can't belive i forgot it :oops: thanks :D i will recopy every thing to this reply so there is not as much screen scrolling . Hello, this will be my first project i am building ( as a hobby) I am making this for a motorcycle and it is so that i can combine my fm radio and cb into...
  2. A

    First project

    DO you guys understand what i am trying to do? Just wondering why there is no reply
  3. A

    First project

    Hello, this will be my first project i am building ( as a hobby) I am making this for a motorcycle and it is so that i can combine my fm radio and cb into one head set, so that they radio will play intill there is something coming in on the cb in which case it will override the fm and play the...
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    digital radio

    i just got around to looking these topics up and it apears that i need to use programing to do this. does any one have a scamatic of a nice radio. there is accually not alot of tutorials on the web thanks
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    Digital Speedometer

    ok I am new to electrontics so i will not be able to make you a diagram but i am just offering ideas and may be some one else can help you on that. but i did get a idea, a read somewere that you can use a electric motor as a generator so what if you were to attach a motor to the spinning shaft...
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    Digital Speedometer

    on bicacles you can buy a spedometer that works by puting a magnet on you spokes and another thing on your forks and it counts the rpms of the wheel and multiplys that by the radias. and converts that # into a mph don't know how to do it i am just offering ideas
  7. A

    Digital Speedometer

    I can think of one way to do this but it may be hard. use the spark from your engine (somehow there is a way but i forget) to create a rpm counter and some how find a way to electrontaly determine the gear you in and you can use electrontics to caculate the speed.
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    digital radio

    Thank you all for replying now i can do more research with the info you gave me. these are the reasons why message boards are just as important as search engines thanks
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    digital radio

    hello i have been learning about basic fm radio (complacated) and need some one to point me into the right direction, i want to find some info on how the newer radios work, the ones that when you push a button it scans thew the freuencys or to a memory frequency i tried to do a search but no...
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    RF help

    Ok I like how you used a glass of water and a spoon. Hear is what I am understanding = the spoon acts like an Antenna of a transmitter and send a magnetic field into the air (or a wave in the water for the case of the spoon and cup). But now lets say there is another spoon (another radio...
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    RF help

    ok, i read a few sites now and understand how to make a radio receiver and transmitter, which i am glad of :D . But now i want to know how the cap and coil and other stuff sort out that one frequency and block all the other 8) . THANKS A MILLION for the reply
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    RF help

    thanks I just saved that site and will look at it later.
  13. A

    RF help

    Hello I am in the new in electrontics but I am eager to learn and have learned the very basics, such as caps, resistors, relays, ect. with the help of this board and online tutorals. but now I want to learn more and I was thinking about trying to learn about radio frequency that is used with...
  14. A

    car voltage

    thanks a million guys I appricate it thanks
  15. A

    car voltage

    all very intresting, how ever one post said regulated power supply but how is this done (I am a newbe) because if you use a resistor or something else which causes restance the amount of resistance will change acording to voltage applied. and in stuff like a cb radio, Fm radio, radar dector...
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