Electrofriends

“JavaBot” LINE FOLLOWER ROBOT from Java, Indonesia

by Tahan Prahara | August 18th, 2009.
The line follower robot with wireless video camera.

The line follower robot with wireless video camera.

I have designed it just for fun. First I want to know how the line sensor work. I used comparator IC using LM339, two H-bridge sensor using eight transistors, FCS9013, and four transistors, FSC 9012. For the sensor you can use LED and LDR as the light receiver. I changed the LDR sensor to IR sensor. I built this robot using only the analog comparator and IR sensor, no microcontroller. This is smart idea and very cheap approach.

You can download this PCB FILE (ExpressPCB file)

Figure 1: main layout and sensor layout.

Figure 1: main layout and sensor layout.

Components:

R1, R7, R13, R14, R15, R16 – 330 1/4W +/-1%
R2, R3, R4, R5, R6, R8, R9, R10, R11, R12 – 10K 1/4W +/-1%
R17, R18, R19, R20 – 150 1/4W +/-1%
VR1, VR2 – 20K-50K
Led1, Led3 – LED(red) 3mm Led
Led2, Led4 – LED(green) 3mm Led
Optocoupler – 2 piece

Q1, Q2, Q3, Q4, Q5, Q8, Q9, Q12 – FSC 9013
Q6, Q7, Q10, Q11 – FCS 9012

U1 – LM 339
Battery 9 volt – 1 piece
Motor DVD dc 5Volt – 2 pieces
Tank toys for mechanic and wheel – 2 pieces

Figure2: JavaBot, my first line follower robot without the microcontroller.

Figure2: JavaBot, my first line follower robot without the microcontroller.

There are two line styles, white line on the black floor and black line on the white floor.

If you use black line on the white floor,  you can set the robot if the Right-Sensor is on the dark side or black line and Left-Sensor is on the floor it will go to forward (by swap polarity of the motor). If the Right-Sensor is on the floor and Left-Sensor is on the black line it will go to backward.

Figure3: Attach the wireless video camera to the JavaBot.

Figure3: Attach the wireless video camera to the JavaBot.

This project by Tahan Prahara, prahara_satria@yahoo.co.id


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26 Responses to ““JavaBot” LINE FOLLOWER ROBOT from Java, Indonesia”

  1. 1
    Brijesh Says:

    hello
    this is very good project and mostly used in final projects

    Brijesh Arya
    EmTech Foundation

  2. 2
    alter Says:

    bobo wala schematic

  3. 3
    balamurugan Says:

    can u give full details of this project.Because i give it name for my final year project.

  4. 4
    Augustine Says:

    hi
    i’m very much interested in doin this project
    so kindly can you give the full details of the project including circuit diagram and pcb layout
    really this is very interesting

    agugrg@gmail.com

  5. 5
    ann Says:

    i really liked ur project very much can u give the details about it

  6. 6
    dhananjay Says:

    hi
    i’m very much interested in doin this project
    so kindly can you give the full details of the project including circuit diagram and pcb layout
    really this is very interesting.

  7. 7
    dhananjay Says:

    hi
    i’m very much interested in doin this project
    so kindly can you give the full details of the project including circuit diagram and pcb layout
    really this is very interesting.
    plz send on my id-dhananjaygaya88@gmail.com

  8. 8
    mohan Says:

    hi . this s really cool . can u pl send the project details especially the pcb layout to my mail id ?

  9. 9
    mohan Says:

    hi . this s really cool . can u pl send the project details especially the pcb layout to my mail id ? mohancarthik@gmail.com

  10. 10
    ankush Says:

    i like your project plz give me some details about it

  11. 11
    banti verma Says:

    sir i wanna to complete the project on flying robot plz send me detail…

  12. 12
    yogita Says:

    hey it very interesting.
    could u plz help me by sending d detail of d given robo i wil very thank ful to u. to ma email id:

  13. 13
    Davit Says:

    Buset keren ya…sayange aku ora dikei……….

  14. 14
    USMAN.K.HAMZA Says:

    i am very interested in your project please give the details to do this project

  15. 15
    OUSSEMA Says:

    Je suis très intéressé par votre projet s’il vous plaît donner les détails pour faire de ce proje

  16. 16
    rajesh Says:

    this is really nice.pls send me the full details about the project.especially about pcb lay out
    and functionning.thankuuuu………..
    my email id: rajeshkannapwf@gmail.com

  17. 17
    waseem Says:

    i am very interested in your project please send me full details to do this project

  18. 18
    varun Says:

    hey, nice job…plz send me more details…….

  19. 19
    vimal Says:

    hello sir
    project is very interesting.
    if you don’t mind, plz send me project detail and pcb layout.

  20. 20
    sushil sharma Says:

    hiiiiiiii plz can u send me the full details of how u made it as fast as possible without usin the micro controller in details plzzzz and also how to integrate the camrea with it so dat i can view it wirelessly k thank you and fast plzzzzz

  21. 21
    sushil shrama Says:

    my mail is sushil_2316@yahoo.in

  22. 22
    prashant Says:

    hi
    i’m very much interested in doin this project
    so kindly can you give the full details of the project including circuit diagram and pcb layout
    really this is very interesting

  23. 23
    fatimah Says:

    can u email the whole refences? actually how it does work?

  24. 24
    fatimah Says:

    can u email the whole refenrences? actually how it does work?

  25. 25
    shankaran Says:

    hi
    i’m very much interested in doin this project
    so kindly can you give the full details of the project including circuit diagram and pcb layout
    really this is very interesting.
    mail: cooldude_shankaran@yahoo.co.in

  26. 26
    MAJID Says:

    can u send me the full details of this project , i have a same event ( exhibition ) this year in my university .
    abdulmajidsalah@hotmail.com

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