How to make a robot using Arduino

In this article, I am going to describe how you can make a Robot or humanoid robot using Arduino.

It is an otto robot. Otto is an open-source robotic program.

Arduino robot
Arduino robot

using it you can make your customized robot & it is very good for learning robotics movement, sensors & programming.

You Need to make Otto Robot

  • Arduino nano
  • 9g micro servo motor 4 pieces with all Screw & shafts
  • Hc SR 04 ultrasonic sensor module
  • 5-volt active Buzzer
  • 4 pieces AA size rechargeable battery & battery holder
  • Capacitor 220mfd & Ic 7805
  • Male & female header pin
  • Terminal block & push to the on-off switch
  • Vero board
  • Jumper wires
  • 3d printed Otto robot parts
9G servo motor for otto
9G servo motor for otto

Download 3D .Stl file for 3D printing Otto

Download 3D parts
Otto robot 3D parts
Otto robot 3D parts

You can make these 3d printed parts if you have a 3d printer it is free for download

or you can buy these parts.
You can also buy a complete kit from ottodiy.com

After 3D print is completed you have to insert 4 9G servo motor in Robot Leg & foot.

Otto robot
Otto robot
Otto robot leg assembling
Otto robot leg assembling

Otto Robot Electronic part

You can make the electronic part using
Arduino Nano IO shield but I am making a customized circuit on a Vero board.

Arduino nano iO shield
Arduino Nano iO shield

Connection details

Left leg connect to Arduino pin – 2

Left foot connect to Arduino pin – 4

Right leg connect to Arduino pin – 3

Right foot connect to Arduino pin – 5

Ultrasonic sensor Trig pin to Arduino pin – 8

Ultrasonic sensor Echo pin to Arduino pin – 9

Buzzer + to Arduino pin – 13

Circuit for Otto robot
Circuit for Otto robot

For power, you can use 4 double A rechargeable battery or use a power bank on an Arduino nano mini USB port.

Otto robot circuit diagram
Otto robot circuit diagram
Otto robot customized circuit
Otto robot customized circuit

Otto robot programming

Download otto robot zip library from here

Then add the zip library to Arduino IDE. Go to file > Example >OttodiyLib

Here are some sample code for your robot. Chose a sample code and upload it to Arduino nano.

For better performance, you have to calibrate the robot.

For calibration go to file >Example >OttodiyLib>calibration> otto calibration serial.Upload this code & you can calibrate your robot using the serial monitor of Arduino ide.

Otto is ready
Otto is ready

Video tutorial

Leave a Reply

Your email address will not be published.