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  1. #1
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    Electronics and RC Car

    Hi,

    Sorry if I'm posting in the wrong thread and feel free to move my post to the appropriate thread.

    I'm trying to learn more about electronics and also about microprocessor so I thought the best way is to rip out an old RC car, hope the good people in this forum can help me to understand better what I'm looking at. I've taken few picture of the RC car and would like some guidance on few things I'm trying to understand:


    1. The below picture shows what the main board of the car looks like there is small microprocessor (not sure what kind it is), was wondering if anybody know whether this is PIC or some kind of processor ? besides the processor I'm bit confused why there are so many resistors, capacitors ?

    Click image for larger version. 

Name:	CarBoard.jpg 
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Size:	1.43 MB 
ID:	62559

    2. The below picture shows the wiring from the board to the back and front part of the car and also to the antenna. I'm bit lost in the antenna part, as can be seen in the picture the antenna goes to a coil form and a yellow wire is soldered near the screw, how does this work ?

    Click image for larger version. 

Name:	CarAndBoardOverall.jpg 
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Size:	1.66 MB 
ID:	62558

    3. The below picture shows the front part of the car that is wired from the board to a magnetic kind of thing which are 'hooked' into the axle of the wheel so it can move left and right I was wondering how does the board sends 'signal' to the magnet so that it turn clockwise of anti-clockwise so as to make the axle turn ?

    Click image for larger version. 

Name:	CarMagneticFront.jpg 
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Size:	1.84 MB 
ID:	62560

    4. Last picture that I need to clarify is the back of the car the wire from the board runs through to a 'motor' kind of thing which in turn will turn the wheel but confuses me is there is a capacitor soldered near the motor, can anybody tell me why is this done like this and what is the function ?

    Click image for larger version. 

Name:	CarBack.jpg 
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Size:	1.65 MB 
ID:	62561Click image for larger version. 

Name:	CarBackSomething.jpg 
Views:	3 
Size:	1.05 MB 
ID:	62562

    That's all for now, and thanks for your help.

    •   Alt12th October 2011, 12:06

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  2. #2
    Advanced Member level 4
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    Re: Electronics and RC Car

    Here is some info and schematics
    of electronics in that car.

    Click image for larger version. 

Name:	receiver using the RX-2 chip.jpg 
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Size:	173.5 KB 
ID:	62564

    4 CHANNEL RECEIVER
    The receiver using the RX-2 chip:
    27MHz Links


    TOY CAR REMOTE CONTROLLER WITH FIVE FUNCTIONS
    http://www.elenota.pl/upload/TX-2B%28RX-2B%29AY.pdf


    TX-2B / RX / 2B radio remote control.
    5 channel radio remote control circuit based on ICs TX-2B and RX-2B from Silan Semiconductors
    ---> Hike with wise men , then you will be wise <---



    •   Alt12th October 2011, 13:36

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  3. #3
    Junior Member level 3
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    Re: Electronics and RC Car

    Thanks for the links @kak111 now I have to do some basic electronic readings first before digging into those links and documentation.



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