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In this instructable i want to explain how I build a Lego car with Arduino that will avoid obstacles.

Step 1: What Do You Need

  • 4 motors and wheel
  • Distance sensor (HC-SR04)
  • Servor motor (Micro Servo 9g SG90)
  • Motor driver (L298N Dual H-Bridge)
  • Arduino one
  • Lego and some materials to construct you're car
  • 1 or 2 power supplies (powerbank)
  • Breadboard and wires

Step 2: Build a Car

I used Lego to build the car, to connect the motors to the lego I used some metal screw-threaded rod.

Step 3: Wire It Together

See the diagram for the correct wiring of the Arduino. Make sure the Led's are set the right way, I wire everything to a breadboard and then to the different ports on the Arduino but you could connect them directly of course.

I used a separate power supply for the Arduino and the motors, you can use one power source if you just have one.

Step 4: Start Coding

I attached a example program to use with you're Arduino. Its not perfect but it should work. At the top you can change to ports to you're own configuration if you need.

<p>good...can u try to make drawbot</p>
<p>I love it. Lego and Arduinos are two of my favorite building toys/tools. </p>

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