How To Make A Line Following Robot

 

Hello Instructables,

This my first time making a robot . In this instructable i will show you how to make a line following robot. Note that this a instructable for beginners who just want to make a robot for the fun of learning it. It will not be good for people who want their robot to be really fast and follow a line in less then a minute . This robot moves at a medium speed.

Step 1: Materials

For this robot you will need:
prototype board x1
-2907 transistor x2
-leds x8 (3 red,3 yellow,2 orange)
-LM339 x1
-1k resistor x2
-150 ohms resistor x 4
-Photocells x4
- 20k potentiometer x2
- DPDT switch Center off x1
- Motors x 2 (any kind of motors you would like)
- Wheels x 2 (wheels that fit your motor)
- A sandwich container, box, etc..(something strong enough to hold your circuit in)
- 9 volt battery
- 9 volt battery connecter
- Wires

Tools:
- Side cutter
- Long Nose Plier
-  Soldering Ion
-  Solder
- Wire stripper

Comments

[sayedruhollahdeliry]

Greeting,
Could you give more explanation about its sensors mechanism, please?
I mean how much the distance should be between the sensor and the ground and if it move away from the line what will happen?
thanks.

[chan430]

hi... its an awesome project... can i ask for the schematic diagram? i have all the components already... :) [e-mail]

[aswaminathan]

can u please send me the pdf to email id- [e-mail]

[MarianNeedsHelp]

also, where you solder, is it possible to use rubber cement? If you aren't comfortable with soldering. or, maybe electrical tape? I ask because i've made a hot air balloon and for the circuitry we used electrical tape and well. as you guessed, rubber cement.

[MarianNeedsHelp]

Also, is there a specific TYPE of 1k resistor?

[MarianNeedsHelp]

What is the WATT of the L.E.D's?

[vizmotion]

Thank you for creating this article. I am working with my son to build this robot. I see the diagram is step 11. I almost missed it. Once again thanks.

[gumfekar007]

pls send me ckt dig. [e-mail]

[gumfekar007]

pls send me ckt dig [e-mail]

[rcritic]

send me ckt diagram [e-mail]

[rcritic]

Send me the circuit diagram too [e-mail]

[abhigyangoswami]

can you plz send the circuit diagram in my mail id [e-mail]

[abhigyangoswami]

Plz send me the circuit Diagram in my Mail Id:[e-mail]

[Jayashree Mahimanna]

hey i like the project kindly mail me the circuit diagram... my email id is [e-mail]

[devesh.loverboy]

(removed by author or community request)

[bhavyamadan]

well when i bought i just said cadmium sulficide photocells so dont know if that helps but yeah

[devesh.loverboy]

(removed by author or community request)

[bhavyamadan]

u use cadmium sulficide photocells

[Abdullah Ahsan]

plz send me the circuit diagram at
[e-mail]
thanks

[sagar.latti]

please send the ckt [e-mail]

[guruthumb]

Check this easy line follower out. All schematics and code included:

http://www.guruthumb.com/

[altaf hussain]

plz upload the circuit diagram
and how many potentiometer do you use? is it one

plz reply.

[altaf hussain]

second leg of second potentiometer is connected?where.and plz send me circuit diagram on email id

[e-mail]

plz i am making this earlier reply will be encouraging.
thanks
great work

[Nishant kumar shah]

hey can i get the circuit diagram for this line following robot...plz send it to my mail.   

[kaktus101]

hi is it possible to send me the circuit diagram please, very nice design. i like it
[e-mail]

[kirubasneha]

can you send circuit diagram to:[e-mail]

[hemantbhatia]

please send me the circuit diagram my email id is [e-mail]

[eopemipo]

This is very wonderful and encouraging, please i would like you to send the circuit diagram to my email [e-mail] and i need ur follow up to assist me in trying this project.Thanks

[bhavyamadan]

Thank you for encouraging comment. I got this design from from a book soI will scan the circuit diagram and send it to you as soon as possible. I would be delighted to answer any questions you have regarding the robot as per my understanding.

[SoumeshBanerjee]

Plz send me the circuit Diagram my Mail Id:-
[e-mail]

[srinag]

hey.. i liked your project, can you please send me the circuit diagram of this line follower .. my email id is [e-mail]