Friday, September 28, 2012

Make a Remote Controlled Toy Car Circuit

The market may be full of these hi-end remote controlled toy cars, but for a hobbyists making one at home can be entirely a different experience. The article below explains how to configure a simple remote controlled toy car using a ready made 4-relay remote control module.

If you refer one of the previous articles you will find some data regarding buying of ready made, ready to use remote control modules or devices, which just requires to be wired as per the data and you are able to control any electrical device within a range of 100 meters with a press of a button over the remote handset.

Here we are using one of these ready made remote control modules for implementing the remote car operations.

In this article only the circuit and the wiring part has been discussed, making the car body and fitting of the motors and the wheels will be entirely left on the user, the user may take the help of a carpenter or some fabricator for designing the vehicle body.

The remote control module which is being discussed here uses four discrete relays, which can be toggleed discreretly through the 4 individual switches over the remote handset.

The model car is provided with four wheels, two at the front and two at the rear as usual vehicles have.

The remote control unit may be procured ready-made, the one discussed here will be just perfect for the present application.

Moving back to the proposed project of a simple car remote control, we will need the following components for making the main control units of the system:

A couple of DC motors.

8 nos. 1N4007 diodes.

4 nos. relays, 12V, SPDT

12V Battery, 4 AH SMF, or as per the motor rating.

A general purpose PC boared.

2 nos. 12V DC motors, wattage as per requirement

Once the above things are procured, the motors may be suitably fabricated over a selected piece of metal or wooden base, such that two motrs constitute the two front wheels. Two additional dummy wheel may be fabricated for supporting the front motor wheels.



After this, the PCB may be populated and wired up with the relays and the diodes with the help of the given figure, this concludes the relay box assembly.



Next, the four relay outputs from the remote control in-built relays should be connected to the diodes of the above relay box circuit.

The antenna from the remote should be sufficiently terminated using a foot long flexible wire so that the module becomes responsive even from longer distances.

The operation will need battery power, so needless to say a suitable battery will also be required to be placed and integrated with the discussed circuits inside the toy car.

Done!. Now you may test the unit by pressing the remote handset buttons.

As per the integration of the relay serial numbers to the diodes of the relay box, pressing of the buttons A,B,C, and D over the remote handset would produce results in some specific orders, such as: forward, reverse, right and left movements with the car.

The entire PCB along with the remote control module may be suitably enclosed over the base of the model car such that the system gives an appearance of a well groomed homemade remote controlled car.






45 comments:

  1. hello sir

    is this circuit diagram correct or not ? 4 working for which it is made for,
    plz check link below,
    http://img607.imageshack.us/img607/8682/remotecontrol.gif

    ReplyDelete
    Replies
    1. OK,thnx

      one more thing i want to know?

      i am using circuit wizard for making pcb layout, it is working
      correctly but yesterday i saw tutorial video of circuit wizard on
      internet in which a person after making pcb layout on circuit wizard converts it into CAD/CAM by selecting CADCAM and new window opens in his tutorial for more accuracy like pads size etc etc,,

      but in my circuit wizard there is no new window opens when i select CADCAM option for changing pad size,
      i want to know how can i run cadcam like a person do in tutorial or download from internet
      plz give me link for download above cadcam

      Delete
    2. I am sorry I can't help with it because it's not directly related to my subject and I have little knowledge about it...

      Delete
  2. Its not so simple but a i have beed doing try since morning

    ReplyDelete
  3. Can u pls tell me how i can automate a remote controlled car. i want to use a remote controlled car from market. i want it to change its direction automatically when there are obstacles.

    ReplyDelete
    Replies
    1. That would be a very difficult circuit to make, it's better to procure a ready made car rear obstacle indicator unit, and integrate it with the toy car.

      Delete
    2. how to make a simple remote for remote control car?

      Delete
  4. what is the circuit of remote module????

    ReplyDelete
  5. how can we control the car without remote???/

    ReplyDelete
  6. how i can control car on my laptop....

    ReplyDelete
  7. HI
    I want to know some basics about making receiver and transmitter of a remote car
    So, plz teach me how to make receivers & transmitters

    ReplyDelete
  8. hi mr. where is the circuit for PCB? and when i make it bigger what parts should i use?

    ReplyDelete
  9. dear sir,

    what remote to use?
    plz give example in indian market
    thnx

    ReplyDelete
    Replies
    1. refer to this article, you will have to procure the shown remote control unit from your local market:

      http://homemadecircuitsandschematics.blogspot.in/2012/08/how-to-buy-and-use-rf-remote-control.html

      Delete
  10. hii...jus suggest any website,wer can i learn about all this stuff(diodes,relays,transmitters,recievers etc etc),i knw how to make wired rc car bt i knw nthg about wireless plz.....suggest mee..anna

    ReplyDelete
    Replies
    1. I personally do not know any such appropriate website, there are many that will provide you with circuits, but there arn't any proper tutorial sites

      Delete
  11. hello sir,
    can i use any remote,which mean's my old remote control cars remote?
    can i......................?

    ReplyDelete
    Replies
    1. if it has 4 relay outputs, then yes you can use it with the above circuit.

      Delete
  12. the relays you are talking about in this module can make car very heavy which can make car move slow can you recomend any light weighted transistors to use. can you provide us any circuit for wireless webacam so we can make a spy car.
    thanz in advance.

    ReplyDelete
    Replies
    1. relays are actually very light, so no problem, yes webcam can be added by installing ready made wireless cameras in the car.

      Delete
  13. can you provide us wireless webcam circuit? I already have Logiteck 720 pixels 500ma webcam i want a circuit so i can attach it to my RC car.
    Thanz in advance.

    ReplyDelete
    Replies
    1. You can easily buy them online, see these examples:

      http://www.foxoffer.com/images/large/TE60%205.8G%20Wireless%20Mini%20Camera_LRG.jpg

      http://recordcctv.com/images/mini_camera.gif

      Delete
  14. Hi please can i see the circuit diagram for the remote control

    ReplyDelete
    Replies
    1. remote control circuit can be seen here:

      http://homemadecircuitsandschematics.blogspot.in/2012/02/how-to-make-remote-control-circuit-from.html

      Delete
    2. .....sorry here's the correct link:

      http://homemadecircuitsandschematics.blogspot.in/2013/07/simple-100-meter-rf-module-remote.html

      Delete
  15. And also i need the circuit diagram of a wireless camera thanks in advance

    ReplyDelete
  16. Hi sir can I use xbox 360 controller for it

    ReplyDelete
  17. And what is the function of relay 4

    ReplyDelete
  18. hi, i am Ramesh from chennai,i want make wireless remote car,so any one can help me,what are the things need and how much cost it will take to complete..? please help me its very urgent ,,
    contact : r.ram2012@gmail.com

    ReplyDelete
    Replies
    1. Hi, I have explained the design in the above article, you can try it out.

      Delete
  19. Hi,i decided to do the home made wireless remote car business so pls who can do the wireless remote car pls contact me

    email : r.ram2012@gmail.com

    ReplyDelete
  20. good morning sir
    em new student
    sir as u represented in figure there is remote module n
    in component there is no one
    can u tell me about remote module it which is to use or
    or what this helical part is a relay ?
    please make me clear.


    ReplyDelete
  21. Boss can u plz give me a circuit which on/off relay by getting sound of alarm .

    ReplyDelete
  22. Boss plz give me a circuit wich can on/off relay by geting the alarm sound than start forever relay on.

    ReplyDelete
    Replies
    1. please check out the design here:

      http://homemadecircuitsandschematics.blogspot.in/2014/05/sound-activated-remote-control-circuit.html

      Delete
  23. Where can I get these simple circuit kit. I want to teach my 8th standard son.

    ReplyDelete
  24. Sir
    Please solve out my problem I have 40 MHz Rc car but it can't move forward it only move backward I have checked all components of transmitter and circuit but nothing to get anything

    ReplyDelete
    Replies
    1. If your Rx incorporates relays, listen whether it clicks or not for both the modes...or connect two LEDs across the motor with opposite polarity and check if the LEDs light up alternately in the forward backward modes.... each of the LEds must have individual 1k resistors in series....

      Delete

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Readers are advised to proceed with the construction of the presented circuits only after understanding the concepts from the core. Not adhering to this can lead to failures and frustrations.