Step 1: Getting Ready
9 volt battery
take the battery and tape the foil to the battery.See pictures
For this we need
2 flat lego boards
2 by 4 block see pic
our battery with everything attached
We tape the motor to the legos and we put the wheels and battery on for more info see pictures.
pictures may have knex type lego pieces
Step 3: Troubleshooting
Here is the solution.
9 volt batteries last long but have less current then our foil reduces current even more. This will not do. Now if we were to use three or more AA batteries it would have current.
So get a battery holder and masking tape some wires to it. This fixed my problem giving me .50 current while my 9 volt gave me .20.
So if you are done with that lets get on with the electro lego car.
Step 4: Adding Wheels
two dc motors
screws or masking tape
To do this first take the two wheels and screw or tape them to two motors.
Next we get our new battery pack. Test your motors the wheels should spin with the motors. In the pictures I use my two part motor.
Step 5: The Fan
Lets go back to our lego car. Lets think about that motor sitting there doing absolutely nothing. That is our fan it will vibrate our robot car. So lets add the fan.
we masking tape the piece to the motor then try it out the piece should vibrate the hole platform.
Well thats done next up :)
Step 6: More About the Wheels
This step is when we put the wheels on on the moving robot. tape the motor to any nice flat piece. If you have two motors tape them on either side.
Now next step is to support the wheels get
a 2-3 block and add support wheels.Also another flat block. Put them together until your
wheels are supported.
Step 7: Attaching the Two
Step 8: Now We Have to Do More Troubleshooting
My wheels did not move. My robot stands still instead of moving. Oh the wheels move but the car doesn't.
This flaw can easily be repaired. Try putting pressure on the wheels it should move. Now all I did was adjust the height of the platform. Once I did that my wheels hung down. This made it touch the ground with more force. The problem was that our wheels were not touching the ground. Too HIGH.
Their are a million flaws which can happen if you comment I may be able to help you.
Step 9: The Battery Compartment
Making switch 1
1 a 1-2 lego piece
2 aluminum foil
4 another 1-2 lego piece
5 2 2-3 lego pieces
I add the switch for only the fan the wheels can stay as is.
the moving lego part connects with the foil on the motor.
The battery wire is attached to foil masking taped onto the brick. When the brick moves down the foil makes contact and our motor turns on.
Step 11: Now We Have to Do Some Furnishing Up
Step 12: Whats a Car Without Headlights
batteries I prefer button cells
Tape the leds and batteries together then tape the leds to your car. The leds should light up and make your headlights. I did not tape the positive wire to my button cells. Instead I attached the button cell to the motor which is magnetic. Then the positive wire is pushed under the cells so the leds light up.
Tip:Use nice and bright leds
suggestion:: try your car out in the dark with its new headlights
Also for better results add a switch
Please follow favorite and post some feedback on the instructable. And thank you if you do.:)