Step 4: Soldering Components

Solder all parts on the boards.
Be careful of the correct direction of components.
Use a socket for PIC16F84A IC.
Solder motors and battery holder on the back side of the Bottom board and put some pieces of paper around motors to avoid unexpected contacts in the circuit.
Solder C4 and C5 right on the motors.
Put a piece of paper among potentiometers legs to avoid contacts.
<p>I want schematic....I tried but I m unable to load the previous comments. I'll be grateful.thanks </p>
<p>As mentioned at step 3 I have only a symbolic diagram of the robot that you can find it there. </p>
<p>i made a line follower robot but i dont know the conf of IR sensors i used bascom avr 8</p>
<p>dear sir please me give a market price of following component</p><p>1)A 4 AA battery holder<strong>(with image)</strong></p><p>2)PIC16F84A Microcontroller + Socket<strong>(with image)</strong></p><p>3)LM324 Comparator(<strong>with image)</strong></p><p>4)L298 Motor Driver + Aluminum Radiator(<strong>with image)</strong></p><p>5)4MHz Crysta<strong>l(with image)</strong></p><p>6)TCRT5000 Infrared Sensors<strong>(with image)</strong></p><p>7)60rpm MiniMotors with Gearbox (6V)</p>
<p>They are all typical electronic components you can find in any electronic components shop.</p>
<p>thanks for giving my first question's answer !!!!!!!!!!!!!!!!!</p>
<p>sir please give me a image of gear box</p>
Sir, I just came across this project, and its the best line follower i have seen.<br> I tried to make it but having some doubts. <strong>Can you tell me&nbsp;</strong><strong>where to connect the motor terminals, the bottom board terminals or back board terminals? or both?<br> having trouble . Please help</strong>
<p>Both boards.</p>
<p>I have the same doubts. Should the capacitor be in parallel with the motor? Can I ask why?</p>
<p>Yes, this is for motor noise reduction.</p>
Can you pls post the full detailed schematic diagram. Showing the connections of all the ICs used.
You can find the only diagram that I have in older comments.
Thank you sir. I just want to ask if there is no really supply on the vdd and vss of 16f877a
<p>ic won't work without supply, so there is a 5v supply.</p>
<p>If I use CNY70, is there something that I need to change, for example, the circuit connection and/or the source program???</p>
You must compare the datasheet of two components.
<p>sir plz i want line follower program code for arduino atmega8 by using tcrt 5000 analog array sensors which cotain 5 sensors and also for 7 segment timer display which start time when robot while on and stop time when robot while off </p>
<p>send code to imronmd7@gmail.com </p><p>it's sir plz plz help me </p><p>code for this arena to find short path complete the trak</p>
<p>Good day Sir! May I clear, are the resistors 1/4 or 1/2 watt? Are those motors DC? Can we also use servo motors? =)</p>
1/4. DC. Yes, but you must make them rotate 360&deg;.
<p>Can I use CNY70 instead of TCRT5000?</p>
You can use any similar components.
<p>Sir,</p><p>Can you send me the schematic diagram. </p><p>Please mail to ksaravanakrishnan@gmail.com</p>
You can find it in below comments.
<p>can i use PIC16f887A as substitute?</p>
Yes, but you must compiler code again for your PIC
<p>i have made line follower robot using ardiuno UNO , robodiuno motor shield , two ir sensor and two gear motors . sir plz send me the circuit diagram . i have code but </p>
<p>i want to buy it. How much?</p>
Come on, it is a DIY project, try to make it yourself.
<p>sir ,, can u send me the code for this arena !! I wanna help plz !! <br>I use 4 IR sensors and DC geared motor <br><br>send me on dedoo.shanshan@yahoo.com</p>
You can find the program for any path in the instruct able.
<p>sir , sorry to bother you , can you send the circuit diagram about this robot for me through email? it will be a great help. thanks in advance. j0etk@hotmail.com</p>
<p>The explanation of the above project is very interesting and easy to understand. I have a circuit diagram for this concept. If you are interested to get the circuit diagram, visit the page: <strong><a href="http://www.electronicshub.org/line-follower-robot-using-microcontroller/" rel="nofollow">Line Follower Robot</a></strong>.</p>
<p>i want code for this arena ... im using ATmega 8 with 2 DC geared motors !!! and im using AVR STUDIO 4 as a complier an im writing code in simple c !!! please help me </p>
The program code is so simple that you can change it for your microcontroller easily.
<p>Can you please give me the Proteus or any other software file</p>
<p>I only have the files that are attached to step 3.</p>
<p>The PCB tracks are too small and when i connect them to eatch other the copper strip off the board second the battery holder 6v and -6v ends are used and the other ends are not used plzzz answer me quick</p>
some of the copper parts beside battery holder are just for fastening the battery holder and doe not connected to electrical circuit.
<p>&iquest;C&oacute;mo puedo representar este robot en un diagrama de flujo?</p><p><br></p>
<p>sir please send me the circuit diagram </p><p>my email id is : saurabh1995@rediffmail.com</p><p>thanks in avdance</p>
<p>how i can open the (.wmf) file ??</p>
<p>wmf (windows metafile) is an image file. you can open it with image viewer or editors. BTW you did not need to open them, they are all in the pdf file too, just print the pdf.</p>
dear sir. <br>do u just change the LED to the DC motor with gearbox? <br>http://www.instructables.com/files/orig/FMS/1ZXP/GE7LEZ89/FMS1ZXPGE7LEZ89.jpg <br> <br>and can i use [30:1 Micro Metal Gearmotor] ?..it look like yours..but free-run RPM 440.. <br> <br> <br>thank sir.
Dear sir please Line Follower Robot .asm and .inc files... <br> <br>my e-mail - fast.aruna@gmail.com <br> <br>Sir please reply urgently....
You can find all files related to the robot program on step 7. There is no inc file. I used &quot;PicBasic Pro&quot; for programming.
Dear sir, i am school student.When Mode LED is off robot is in default mode working right motor. Not work left motor ??Motor mode and Sensors mode working left motor and right motor . Sir please default mode worked hex file&hellip;. <br> <br>my e-mail - fast.aruna@gmail.com <br> <br>Sir please reply urgently....

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Bio: I'm a mechanical engineer, and I like computer programming, mechanics, electronics and specially the robotics.
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