Discussion in 'General Electronics Chat' started by mersen_hasan, Jan 29, 2005.

  1. mersen_hasan

    Thread Starter New Member

    Jan 29, 2005
    want to design a pair of transmitter-receiver or a remote control at my project about robotics.
    (about or more 100Mhz,operates at 20-25m)
    i looked for it and found many things! :wacko:
    can you suggest an alternative solution or especially circuits?
  2. Maxx

    Active Member

    Oct 30, 2004
    You can buy ready made RF transmitter and receiver modules that operate on 433.92Mhz that would be suitable for this, they offer a direct input and output for data so are fairly easy to interface to most logic, or microcontrollers.

    Unless you wan't to totally build your own from scratch (which isn't easy and would cost a lot more) then i would recomend the ready built cheap modules.

    Also with radio control equipment you will have to comply with very strict licensing laws for radio interference. The ready built modules have already been designed to comply with these regulations and make life a lot more simple for the experimenter.

    I'm sure a Google search will give you some companies that supply them in your area.

    Some manufacturers are RF Solutions and Quasar Electronics but there are probably lots of other makes.
  3. mersen_hasan

    Thread Starter New Member

    Jan 29, 2005
    i wish i could use the ready ones. :(
    but i can't.because the main rule of the work/project is "not to use the ready circuits".would you suggest some thing like circuit diagrams please?
  4. magik

    New Member

    Jan 31, 2005
    dear i can tell you the IC # that is LM1871N & LM1872N
    This is the pair of RF transmitter and reciever.
    You can get the data sheet of these ICs
    in the datasheet, You can get the circuit too
    that full fills tour needs