Build Your Own Racing Robot at Home : Be ready for college techfest

Build Your Own Racing Robot at Home : Be ready for college techfest

 

In this post we will show you in detail how can you build your own robot at cheap cost at your home alone or with a group of friends. Full explanation is given with pictures and circuit diagram wherever felt needed. The robot can be controlled by remote and moved with it. We also have a video at the end of tutorial showing its working.

Objective for building this kind of robot

Mainly the idea is to build a robot which can travel in almost all types of road…be it a muddy or sandy or a slope or a road filled with pebbles. This robot can also compete in various robotics competition held in different colleges, and can also be modified to make it a war robot, which is also an event in the robotics competition.

Budget

Truly speaking this robot will cost you around 1500 bucks.so it will be better if you can form a group of 2 or 3 .so that the total cost will be shared by the members.

Parts Needed

  • The Body: Used a metal body, which is taken from an old dvd player. You can also use a piece of wood or plywood like this. Make sure that the total dimension of the robot remains 250mmX250mmX250mm. this is the default dimension in most robotic events.

remote controlled robot body

remote controlled robot body

 
  • Motors: You will need 4 dc geared motors for 4 wheels. Specifications: 12V, 500rpm.

remote controlled robot motors

remote controlled robot motors

 
  • Clamps For Motors: 4pc.

remote controlled robot clamps for motors

remote controlled robot clamps for motors

 
  • Tyres: 4pc

remote controlled robot tyres

remote controlled robot tyres

 
  • DPDT Switch: 2pc

remote controlled robot dpdt switch

remote controlled robot dpdt switch

 
  • Wires
  • 12V, 1A adapter/SMPS

remote controlled robot smps adapter

remote controlled robot smps adapter

 

 

 Connection Diagram

remote controlled robot connection diagram

remote controlled robot connection diagram

 

Make sure you connect the wheels in the proper places as marked in the diagram. Here R stands for red wire and B stands for black wire.

How To Assemble The Parts Of Robot

Attach the clamps to the bottom of the plywood, where you will connect the motors and the wheels.

remote controlled robot after connecting wheels

remote controlled robot after connecting wheels

 

The bottom will look like this after you have completedthe connection of motors and wheels to the clamps.

remote controlled robot after connecting wheels2

remote controlled robot after connecting wheels

 

Then connect the wires to the dpdt switches and the smps as shown in connection diagram. Finally my robot looks like this with the remote control box and the smps.

remote controlled robot with control and SMPS

remote controlled robot with control and SMPS

 

Control

Position of DPDT Switch Function :

Both the dpdt switch pressed forward. Robot moves forward.

Both the dpdt switch pressed backward.Robot moves backward.

Only left dpdt forward Robot turns right.

Only right dpdt forward Robot turns left.

One dpdt forward, another backward. Robot turns 360 degree.

Here the dpdt switches are mainly used for changing the polarity in the motor, so that we can move the motor forward or backward with ease. There is also a video, if you wish to check it out. It shows the robot in action, and the controls are also shown over there. One last thing .you will need a small plastic box, so that you can use it as an remote control box where you will keep the dpdt switches.