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R/C toy car transmitter circuit

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by cyberquest, Apr 11, 2005.

  1. audioguru

    audioguru Well-Known Member Most Helpful Member

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    Weren't we talking about a cheap toy car with omni-directional transmitting and receiving antennas way too short at 27MHz for efficiency?
    Doesn't its receiver use only a single transistor without automatic gain contol?
     
  2. mallanna4u

    mallanna4u New Member

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    please any one help me to build a wirreless robo car.
    i want transmitter and receiver circuits of remote control of a RC car
     
  3. HarveyH42

    HarveyH42 Banned

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    You do realize this thread is from 2005? Have you read it yet? Building from scratch would be quite a challenge, even if you had some decent test equipment. Toy cars are cheap, hobby R/C transmitters/receivers aren't too expensive these days either. Plenty of reasonably priced modules the interface easy with microcontrollers. Can't imagine just building a pair, just for fun. I've only built 3 transmitters, and didn't get much range from any of them, and poor reception. The video transmitter was even a kit.
     
  4. dave

    Dave New Member

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  5. audioguru

    audioguru Well-Known Member Most Helpful Member

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    Here is the transmitter and receiver schematics for a $10.00 radio controlled toy car. Its range might be 10m. Its control is just on and off with its motor.

    The transmitter is not modulated but has a crystal for frequency accuracy.
    The receiver is a one transistor super-regen. I guess it amplifies the squegging frequency when it receives a carrier frequency.
     

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