<p>I think your best bet is to start with <a href="http://brickset.com/sets/42048-1/Race-Kart" rel="nofollow noreferrer">42048 Technic Race Kart</a> and a <a href="http://brickset.com/sets/8293-1/Motor-Set" rel="nofollow noreferrer">8293 Power Functions bundle</a>. This gives you just one motor, but that's enough for propulsion (going back and forth).</p>

<p><a href="https://i.sstatic.net/XGKgJ.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/XGKgJ.jpg" alt="enter image description here"></a><a href="https://i.sstatic.net/pbAHM.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/pbAHM.jpg" alt="enter image description here"></a></p>

<p>You would need to look into a motor driver board (for example the <a href="https://www.pololu.com/product/2135" rel="nofollow noreferrer">DRV8835</a>) for the motor, and look at schematics for a power functions cable mod to be able to drive the motor directly from the RPi - see <a href="https://bricks.stackexchange.com/questions/2325/how-to-use-power-functions-with-mindstorms-ev3/7051#7051">this question</a> for several suggestions on how to do this..</p>

<p><a href="https://i.sstatic.net/jeMzC.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/jeMzC.jpg" alt="enter image description here"></a></p>

<p>For steering you can look into a <a href="http://brickset.com/sets/88004-1/Servo-Motor" rel="nofollow noreferrer">88004 Servo Motor</a>, or use a normal Medium motor with extremely fine control or a good set of gears to be able to make small steering adjustments.</p>

<p><a href="https://i.sstatic.net/sLSwZ.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/sLSwZ.jpg" alt="enter image description here"></a></p>

CC BY-SA 3.0
2016-08-11T04:19:15.647Z
Note that you will end up with a big set of power functions parts on a small chassis - the go cart is big enough to carry them, but not by a large margin. The two photos are not at the same scale.
Móż
CC BY-SA 3.0
2016-08-11T07:17:07.333Z
Thank you. Very helpful. Having read some tutorials I'm now thinking about getting the "BrickPi", which will help connecting Lego motors and sensors to my RaspberryPi. In this case I wouldn't need the motor driver board. This is not the cheapest solution but it looks very simple to me.
mosquito87
CC BY-SA 3.0
2016-08-11T11:56:18.420Z
Yes, the BrickPi is a great solution as well. And to @Móż point: yes, it becomes quite cramped but if you remove the seat and the fake engine, there is enough space to place the motor and the battery box. I have done this in my classroom program.
Phil B.
CC BY-SA 3.0
2016-08-11T12:40:14.987Z
Oh, you might want to add the BrickPi details as an answer to this post as well - could be helpful. @mosquito87
Phil B.
CC BY-SA 3.0
2016-08-10T17:16:02.123Z
2016-08-10T17:16:02.123Z
2017-04-13T12:47:56.213Z
Phil B.
<p>Having no LEGO Technic parts at all, I'm looking for the cheapest and simplest way to build a LEGO Technic car which can be combined with two Lego Technic motors to drive forward and backward (phase 1) and to steer to left and right (phase 2). </p>

<p>I see two possibilities:</p>

<ul>
<li>Buy a complete LEGO Technic product (which one can you recommend?)</li>
<li>Get all the parts needed online (which parts do I need?)</li>
</ul>

<p>I would like to combine the two motors with my Raspberry Pi.</p>

<technic><building><motor>
Cheapest and Simplest way to build a LEGO Technic car?
mosquito87
# Cheapest and Simplest way to build a LEGO Technic car?

(Asked by: username_0 on 2016-08-10)

Having no LEGO Technic parts at all, I'm looking for the cheapest and simplest way to build a LEGO Technic car which can be combined with two Lego Technic motors to drive forward and backward (phase 1) and to steer to left and right (phase 2).

I see two possibilities:

* Buy a complete LEGO Technic product (which one can you recommend?)
* Get all the parts needed online (which parts do I need?)

I would like to combine the two motors with my Raspberry Pi.

**Tags:** technic, building, motor


---

## 1 answers

### Answer by username_1 on 2016-08-10. Score: 4

I think your best bet is to start with [42048 Technic Race Kart](http://brickset.com/sets/42048-1/Race-Kart) and a [8293 Power Functions bundle](http://brickset.com/sets/8293-1/Motor-Set). This gives you just one motor, but that's enough for propulsion (going back and forth).

[![enter image description here](https://i.sstatic.net/XGKgJ.jpg)](https://i.sstatic.net/XGKgJ.jpg)[![enter image description here](https://i.sstatic.net/pbAHM.jpg)](https://i.sstatic.net/pbAHM.jpg)

You would need to look into a motor driver board (for example the [DRV8835](https://www.pololu.com/product/2135)) for the motor, and look at schematics for a power functions cable mod to be able to drive the motor directly from the RPi - see [this question](https://bricks.stackexchange.com/questions/2325/how-to-use-power-functions-with-mindstorms-ev3/7051#7051) for several suggestions on how to do this..

[![enter image description here](https://i.sstatic.net/jeMzC.jpg)](https://i.sstatic.net/jeMzC.jpg)

For steering you can look into a [88004 Servo Motor](http://brickset.com/sets/88004-1/Servo-Motor), or use a normal Medium motor with extremely fine control or a good set of gears to be able to make small steering adjustments.

[![enter image description here](https://i.sstatic.net/sLSwZ.jpg)](https://i.sstatic.net/sLSwZ.jpg)

> **Comments:**
> **username_2**: Note that you will end up with a big set of power functions parts on a small chassis - the go cart is big enough to carry them, but not by a large margin. The two photos are not at the same scale.  
> **username_0**: Thank you. Very helpful. Having read some tutorials I'm now thinking about getting the "BrickPi", which will help connecting Lego motors and sensors to my RaspberryPi. In this case I wouldn't need the motor driver board. This is not the cheapest solution but it looks very simple to me.  
> **username_1**: Yes, the BrickPi is a great solution as well. And to @username_2 point: yes, it becomes quite cramped but if you remove the seat and the fake engine, there is enough space to place the motor and the battery box. I have done this in my classroom program.  
> **username_1**: Oh, you might want to add the BrickPi details as an answer to this post as well - could be helpful. @username_0  

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