“JavaBot” LINE FOLLOWER ROBOT from Java, Indonesia

Tuesday, 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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Author Name :
Tahan Prahara

Total : 62 Comments


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

  1. anne says:

    Hi it is a very interesting project i want to do implement this project….i try to find the DIY project but couldn’t find it….could u please send to me the full details and assembling information about this project if it is possible :)

    this is my email address: aniessuahmad@gmail.com

  2. pdos says:

    can u send me the circuit…i very interesting to use this idea for my final project.

    thanx… email me : pdospno@gmail.com

  3. Sandy says:

    Send me this project details

  4. Tes says:

    Sir,
    I m final year engineering student. I was searching for this topic “Automatic Railway Gate Control & Track Switching” from very long time. Me and my friends hav selected this topic as our project. i want all the information regarding this topic like circuit diagram, source codes, components required to build the ckt and theory. plz send me the info on my e-mail testnow25@yahoo.com as soon as possible. thnx a lot.

  5. surendar says:

    This is cool man i love it…………

  6. surya says:

    hi,brother
    it’s really good project,could u give me ur circuit diagram to me,i’ll try to develop this project in my own idea,
    email___kanna.india@gmail.com
    thank-u

  7. rahul says:

    hey..dude
    Feeling nice to do this project so can u provide most of information related to it i.e. Pcb layout and al that..plz yaar

  8. nikhi; says:

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

    nikhilshinde06@gmail.com

  9. Ankush says:

    nyc workdone.. can u please send me the pcb circuit and about the componenets required for it … i want it to perform on my tech fest….

  10. raja says:

    hi sir, your projects are very interesting. pls upload more and more…i want circuit diagram of this…pls…pls…pls…thank you..

  11. om prakash says:

    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 i.d-omi.dhanbad@gmail.com

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