+ Post New Thread
Results 1 to 6 of 6
  1. #1
    Newbie level 2
    Points: 406, Level: 4

    Join Date
    Sep 2010
    Posts
    2
    Helped
    0 / 0
    Points
    406
    Level
    4

    Electrical components of a kids electric car

    Hi, I am looking to build a small electric car for the kids and am interested in finding out what components I would require, I am looking for a list of the type of items I should be researching further.

    I am thinking of building a 24v system, using something like old mobility scooter motors (one motor on each of the rear wheels). I was also thinking of using a pedal that the kids press down to drive the car, and perhaps a switch to put the motor into reverse (if it isnt too difficult). I am wanting the car to be as fast as a fast walk (say 10-15 km/h), and have enough battery life for at least 30 mins of constant use.

    So I know that I will require two motors, and some batteries, can anyone provide me with some further pointers on the components I should be looking for?

    Should I have a PWM to allow the variable speed and reduce some heat to the motor or should I leave the speed to a switch under the pedal?

    Is there any websites that can provide me with some further information? I have tried a google search and most results are trying to sell me the cars and not explaining how to build one.

    Any help from the community is greatly appreciated.


    Matt

    •   AltAdvertisement

        
       

  2. #2
    Advanced Member level 3
    Points: 6,372, Level: 19
    Achievements:
    7 years registered

    Join Date
    Jun 2007
    Posts
    821
    Helped
    220 / 220
    Points
    6,372
    Level
    19

    Re: Electrical components of a kids electric car

    Should I have a PWM to allow the variable speed and reduce some heat to the motor or should I leave the speed to a switch under the pedal? PWM would be a better choice.

    ---------- Post added at 05:15 ---------- Previous post was at 05:10 ----------

    PWM generation
    Use microcontroller:PWM Signal with PIC 16F84
    Use Timer:PWM using 555. - Jose Pino's Projects and Tidbits.

    More on PWM: Introduction to Pulse Width Modulation (PWM) | Netrino

    ---------- Post added at 05:17 ---------- Previous post was at 05:15 ----------

    Build a 5A H-Bridge motor driver -> Motor driver



    •   AltAdvertisement

        
       

  3. #3
    Newbie level 2
    Points: 406, Level: 4

    Join Date
    Sep 2010
    Posts
    2
    Helped
    0 / 0
    Points
    406
    Level
    4

    Re: Electrical components of a kids electric car

    Thanks John, I notice the H-Bride link you sent is for a 12v motor, would this circuit be able to supply power to a 24v motor, or should I be looking for a 12v motor instead? I am not attempting to break any land-speed records and only speified the 24v motor as that is what I found more inforamtion on in my earlier stages of research.

    Thanks heaps for those links, I will check them out and hopefully they will get me pointed in the right direction.

    Matt



    •   AltAdvertisement

        
       

  4. #4
    Advanced Member level 3
    Points: 6,372, Level: 19
    Achievements:
    7 years registered

    Join Date
    Jun 2007
    Posts
    821
    Helped
    220 / 220
    Points
    6,372
    Level
    19

    Re: Electrical components of a kids electric car

    you can have 24V motor, just need to find the right MOSFET on the H - bridge :)



  5. #5
    Advanced Member level 5
    Points: 12,464, Level: 26
    Achievements:
    7 years registered

    Join Date
    Apr 2010
    Posts
    1,895
    Helped
    405 / 405
    Points
    12,464
    Level
    26

    Re: Electrical components of a kids electric car

    since it is a kids car , can an electric scooter be modified for a car?
    with minimal modification , kids car will be ready(!)
    just my thinking(or idea?)



    •   AltAdvertisement

        
       

  6. #6
    Advanced Member level 3
    Points: 6,372, Level: 19
    Achievements:
    7 years registered

    Join Date
    Jun 2007
    Posts
    821
    Helped
    220 / 220
    Points
    6,372
    Level
    19

    Re: Electrical components of a kids electric car

    Yup. Sure. Why not? :)



--[[ ]]--