“JavaBot” LINE FOLLOWER ROBOT from Java, Indonesia

I have designed it just for fun and it’s my 1st Line Follower Robot :mrgreen: . First I want to know how the line sensor work.

Finally I spent only USD $ 6-7  to build the robot.

There is no MicroController so we do not need to programm. I just 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 Click this Download PCB FILE (ExpressPCB file)

Figure 1: main layout and sensor layout.
Figure 1: Schematic 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.

 

That’s it… you can add wireless cam for to see how the robot walk… ^_^ Thank You

Figure3: Attach the wireless video camera to the JavaBot.
Figure3: Attach the wireless video camera to the JavaBot.

This project by Tahan Prahara,

Email: [email protected]

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

  1. om prakash

    sir,
    i am like your projet very much ,but i wanted some modificaton in that to make robo car will be stop if some person or objet come before their path and if mark or line not proper panted than it shoud be contiue with examiming path near to it.
    plz help me done projet with that modifation.

    my email [email protected]

    Reply
  2. decka mahayuni

    halo prahara satria, saya orang indonesia, seperti saya berminta untuk membuat robot linefollower kamu, bisa tolong kirim peta konsepnya, pcb, dan semua yg diperlukan ke email saya, [email protected]

    terima kasih.

    Reply
  3. vivek.k

    wow…really an interesting work…cn u pls send me the complete details of the work u have done…plzz…i wish to do it as my project…

    Reply
  4. vivek.k

    pls send all datas to [email protected]

    Reply
  5. nilesh

    hey hieee… its realy great..!! can u plz mail me the regarding information about JAVA BOT..!! CIRCUIT DIAGRAM AND JAVA PROGRAMING ETC..!!
    THANKING UU..!!

    Reply
  6. nilesh

    hey hieee… its realy great..!! can u plz mail me the regarding information about JAVA BOT..!! CIRCUIT DIAGRAM AND JAVA PROGRAMING ETC..!!
    THANKING UU..!!

    [email protected]

    Reply
  7. prakash

    hey … its realy great..!! can u plz mail me the regarding information about JAVA BOT..!! CIRCUIT DIAGRAM AND JAVA PROGRAMING ETC..!!
    THANKING UU..!!

    [email protected]

    Reply
  8. hi there ,
    this is a great idea
    and i think that i will chose it for my final project

    so plz can u provide me with some information like circuit diagram, source codes, components required to build the ckt and theory. plz send me the info on my e-mail

    [email protected]

    plz contact me as soon as possible

    Reply
  9. hamid

    congratulation , great project , can you mail me the java code and the file PCB
    THANKS.

    [email protected]

    Reply
  10. hai/..this is very good .. can yousend the circuit diagram and java program for the project.
    mymail id is [email protected].
    thanku

    Reply

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