line follower robot? Answered

Cn i program my robot to send it to specific location...if yes plss give the code???

Question by DeepM3   |  last reply

Does an IC needs to be programmed to work?

Sir, i am a student. I want to know that an IC needs to be programmed to work? If we did not program the ic then what will happen. i am making a line following robot in which i am using an IC i.e. ULN 2003 IC so what should i do tell me, does it need to be programmed to work in the line follower robot

Question by swarndeep singh   |  last reply

Arduino line following robot?

could anybody make a complete step by step instructable on a arduino controlled line following robot

Question by connoboarder   |  last reply

HEMI no programing required !

Hello  I am interested in build a simple mini line following robot  like HEMI dome shape design, has any one here built this robot ! or ones like it, and information on where to get parts mini or micro gear box, and motor and mini wheels to fit as well as mini circuit boards or I will make one via you tube . . Thanks any help appreciated  David  

Topic by beginner 1    |  last reply

How accurate can a line following robot be? (Laser cutter idea inside)

I have no idea how accurate line following robots can be (and this is what I'd some clarification for), but could a cutting laser be mounted to one? The robot would just follow a black line that you've printed out, and in the process would have also cut out the pattern. If that would work, this would allow you to cut out shapes from a huge canvas size, as well as making quick stencils with a fine line Sharpie.

Topic by olliewagner   |  last reply

robot that follows me?

Hi guys so my question is how can i build a robot that can follow me using my phone or anything else

Question by omarb22   |  last reply

signal following robot? Answered

Hi community, i would really make a robot that follows a signal maybe wifi signal the idea is to keep a small chip (transmitter) in my pocket and the receiver would be installed on the robot body or the reverse, so the robot would follow the signal,  and im really thinking to use a tank body ( not wheels) with two  motors that will drive body  just as a tank or Caterpillar digger concept So can the community experts help me how can  i realize my dream, and tell me what could be the parts and how it would work?? Thank you so much community you have been always helpful ! 

Question by vwtm2006   |  last reply

Line follower robot with 100 kg payload

Hello, I like to build a robot that follow a line and can support 100 kg payload,i was wondering where to start to build the chassis. I can weld and have some but  limited access to machining tool. But I was wondering if there is not some stuff i could hack to create it faster. Vincent

Topic by VincentD48   |  last reply

90 degree turn of a line follower robot

I want a line follower to follow this track and when it comes back to the start point i want it to take the path of the starting point again not the forward path and so on . ONLY BY USING LOGIC GATES ( no micro-controller, Arduino..etc )

Question by superdz   |  last reply


Suggest me some robotics projects in my college technical fest. a simple line follower will not WORK. regards.

Question by sameer627   |  last reply

Could someone please identify this board?

I was ransacking through my university's inventory, in a quest to find something to build a line follower robot. I did find something that gave me a positive gut feeling. However, I need to know for sure what exactly this board is and if it is suitable for a line follower robot that should trace a 1.5 inch black line on a white background.  Photo of the board attached. Thanks.

Question by Adarsh_tronix   |  last reply

Can I make line follower robot on white line and can you help for coding for this

I want to make line follower robot on white line i need program for that so can you help for the coding to made that robot.?

Question by Pranali parange   |  last reply

Line counting sensor?

I have a group (20) of small robots that need to all end on a certain line in a grid. My question is how can I get each car to count the number of lines it crosses and when it reaches the right number it stops. The problem is I have a budget of $75 dollars to make the guidance for every car. If there was maybe some sort of central controller that would work for each or maybe it is just cheep enough to make a simple set-up for each one. Any comments or questions would be much appreciated. Thanks in advance, Zootsuitman

Question by zootsuitman   |  last reply

IR based robot?

What changes i can do in simple line follower robot? I made simple line follower robot now i want this robot works when i give IR signals  (ON) and stop when I give OFF  signals through IR remote. Instead of on off  switch on it.

Question by syedmBilal09   |  last reply

i want to start and stop my line follower robot robot by blutooth

Please help me , i have no idea how to change it. i have line follower robot , and i want to operate my robot by blutooth , i want start and stop my line follower robot by blutooh ,my line follower robot code is //code is int rightmotor1=12; int leftmotor1=13; int rightmotor2=9; int leftmotor2=8; int sensorleft=5; int sensorcenter=6; int sensorright=7; int l1=1; int l2=1; int l3=1; int f1=0; int f2=0; int f3=0; ////////////////////////////////////// void setup() { pinMode(rightmotor1,OUTPUT); pinMode(leftmotor1,OUTPUT); pinMode(rightmotor2,OUTPUT); pinMode(leftmotor2,OUTPUT); pinMode(sensorleft,INPUT); pinMode(sensorcenter,INPUT); pinMode(sensorright,INPUT); } /////////////////////////////////////////////////// void loop() { l1=digitalRead(sensorleft); l2=digitalRead(sensorcenter); l3=digitalRead(sensorright); ///////////////////////////////////////////////////////////////////// if(l1==1&&l2;==1&&l3;==1)   //feedback when comes all sensor on white { l1=f1; l2=f2; l3=f3; } //////////////////////////////////////////////////////////////////////////// if(l1==0&&l2;==1&&l3;==1||l1==0&&l2;==0&&l3;==1)   //left turn {   digitalWrite(rightmotor1,1);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,0);   digitalWrite(leftmotor2,0); } else if(l1==1&&l2;==1&&l3;==0||l1==1&&l2;==0&&l3;==0)  //right turn {   digitalWrite(rightmotor1,0);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,1);   digitalWrite(leftmotor2,0); } else if(l1==1&&l2;==0&&l3;==1)  //go forward straight {   digitalWrite(rightmotor1,1);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,1);   digitalWrite(leftmotor2,0); } else if(l1==0&&l2;==0&&l3;==0) //stop {   digitalWrite(rightmotor1,0);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,0);   digitalWrite(leftmotor2,0);   delay(2000);    digitalWrite(rightmotor1,1);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,1);   digitalWrite(leftmotor2,0);   } /////////////////////////////////////////////////////////////////// f1=l1; f2=l2; f3=l3;        //memory variables //////////////////////////////////////////////////////////////////// } , i want to keep all code in function and want to call in blutoooh code i want my robot start and stop by blutooth please help me my blutooth code is #include SoftwareSerial mySerial(10, 11); // RX, TX String state;// string to store incoming message from bluetooth int  LED = 5; // LED on pin 13 void setup() { mySerial.begin(9600); Serial.begin(9600); // serial communication to check the data on serial monitor    pinMode(LED, OUTPUT); mySerial.println("Welcome to the wonderful world of bluetooth communication");   delay(1000);   mySerial.println("Sending a '1' will turn on the LED, Sending a '0' will turn off the LED");   delay(1000);   mySerial.println("a '3' will flash the LED and a '4' will kick out a lot of data from the LDR"); } //-----------------------------------------------------------------------//  void loop() {   while (mySerial.available()){  //Check if there is an available byte to read   delay(10); //Delay added to make thing stable   char c =; //Conduct a serial read   state += c; //build the string- either "On" or "off"   }    if (state.length() > 0) {     Serial.println(state);   if(state == "turn on")   {     digitalWrite(5, HIGH);           }     else if(state == "turn off")   {     digitalWrite(5, LOW);      }      else if(state == "turn1 on")   {     digitalWrite(5, HIGH);           }     else if(state == "turn2 off")   {     digitalWrite(5, LOW);      }     state ="";}} //Reset the variable i am using arduino atmega2560 and blutooth hc 06 and using  l298n 3 sensor

Topic by ShaidK 

Minimalist 2 wheeled robot with front, left, right sensors, and line following

I'm scouring the web for a tested design for a 2 wheeled (+caster) robot with an arduino and 3 sensors, left, right, forward and a line following sensor. Can anyone recommend a specific design (not a kit, but just a tested configuration?) Thanks!

Topic by pitosalas   |  last reply

Auto-follow film technology

Does anyone know if technology exists whereby an object can be filmed and followed by a robot camera when moving at speed (i.e. with motion sensors)? Without the use of a tag on the object being filmed (i.e. like those used by Pixio and Soloshot)? Bearing in mind that the object would be contained within a specific radius.

Question by KatelynP6 



Question by wer6   |  last reply

using TSOP4838 in anti-collision line follower

i want to use IR sensors with emitter part ( IR led ) - calibrated with an IC timer to give 38KHZ IR signal - mounted side by side - not face to face like the counter module - to the receiver part ( TSOP4838 ) which will turn on once something reflect the IR signal back to the receiver. [ the default is that IR signals will go straight forever without being seen by the receiver ]. I've followed the steps of a circuit using IR sensor in an object counter module it included transistors to be triggered instantly as described the problem is that it gives an instant pulse to trigger the 7-segment display. but in here i don't need it to be instant. how could i implement it to make the LED bright as long as i block the path [ not instantly ]. and to be off whenever there's no object in front of the robot

Question by superdz 

can any one give me the code for line follower and obstruction avoider?

I have used arduino atmega 168 board for a line follower come obstruction avoider. i have used ultrasonic sensor for sensing.For execessive  cost i ave not used stepper motor. Can any 1 help me the appropriate code??

Question by bivas2009   |  last reply

How to make Person following Robot?

I want to make a robot for my digital logic design. This robot will follow the person as person walks it follow him... i want to make it using only logic gates... do plz help me to make this robot happen.

Question by ypanhwer   |  last reply

how can i devlop my line tracking mouse robot or reprogramming it?

Hi every bodyam new here and i like this site and peoplei have an line tracking mouse robotand i want to devlop itor reprogramming itcan someone learn me how to make it more funnysee some details here: uAhmed

Question by iraqi   |  last reply

i need line follow code .it work for 5 sensor

I am mechlogy . i need code for arduino i am using 5 sensor code . please provide me workable code.i need code for ln987n and 5 sensor strip

Topic by ShaidK   |  last reply

How would one build a device that follows/is attracted towards a signal(IR, RF, etc.)? Answered

Hello, what is the simplest way to control a device so that it is drawn towards a certain point? I'm sure there is already an instructable on such a device but I can't seem to find it. Sound or voice control, line following, and light following(except maybe IR) won't work. Any guidance would be greatly appreciated. Thank you!

Question by mytleviathan   |  last reply

learning robot

Hey guys. friend and i are working on a project. we are trying to build a robot that will basically be able to follow a path. if there are obstacles in front it will go around them and then continue to the finishing point. no we also want it to learn about its surrounding. so if we bring the robot back to its starting point it will be able to get to the finish with out bumping into objects.we are planing to adopt this robot here!/?ALLSTEPSwhat do u guys think is it possible and if so how.the robot will learn by creating a grid in its memory using multi-dimensional arrays.

Topic by DELETED_kclv1988   |  last reply

What IR source & two terminal Photo transistor can be clubbed to replace either QRD1114 or CNY70 reflective sensor pkg?

I'm referring to - Building of a SPURT BOT(a simple line following robot) submitted by ignoblegnome (See I'm building one for my cousin who's in the 7th grade & found this to be the most simplest & one that looks like its been made by a kid.           It looks so, as it has the least number of electronic components. But unfortunately i have been unable to find both QRD1114 & CNY70 reflective sensor packages. While going through the comments section, i saw a comment by the author himself saying that the package can be replaced with an IR LED & a 2 terminal Photo transistor which happen to be the same components that make up both QRD1114 & CNY70 packages. I would be extremely thankful to fellow users if they could mention the exact part/component number of the IR LED & a 2 terminal photo transistor that can be clubbed & used instead of QRD1114/CNY70 for the same voltage rating & circuit used in the instructable mentioned above. I need this info ASAP, THANKS a TON & kindly forgive me for my bad grammar.

Question by eltro   |  last reply

robot help

Hello guys i was trying to make a beetle bot following the instructions from this site everything went fine but i had 2 broblems that arent totaly solved yet... the wheels to the motor i have no idea how to make em if i buy em they come all different size and the tip of the motor that spins is like verry little grip i hope u understand... and other thing is everything was fine but at the end when my bot suppose to run it didnt it was getting on and off every now and then when i put em on the floor it wont go i was thinking it was heavy but even if it was heavy i am wondering y it was getting on and off every now and then.... can you plz answer both i need to make it its cool

Topic by sydazak   |  last reply

Grid follower robot(analog sensors and digital sensors)?

OK first of all I am under time constraint (just 4 days to make a grid follower) Ok I have built a line follower before (two ir sensors and arduino), So now the problem is ,we have two sensors which we have made using ir emmiters and sensors (which work as analog ,ie no relay) We have now purchased two IR modules which has got a relay giving it a digital output. So I am asking how we should place these sensors to get the least wobling and correct 90deg turns

Question by cthaliyath   |  last reply

How to make a path following robot using IP camera with LabView?

The robot will be the Robotic Starter kit 2.0 from National Instrument.

Question by Elvis Ng   |  last reply



Question by funnycool2000   |  last reply

Code writting?

I'm trying to build a line follower robot and I don't know the first thing about writing code.  I like to play with electronics but have never attempted building anything that requiered programing so I thought I would start simple.  I have an Arduino Uno R3, Pololu QTR-8 (only using 6 of the sensors) and an Ardumoto Motor Shield based on L298 H-bridge logic (not even sure what that means) Are there examples of codes existing on how to connect three componetns together?  What do I need to do next in order to connect these three parts and imput a code so it will smothly follow back tape on a white surface?

Question by bowhunter616   |  last reply

Telephone line power help? Answered

Found a cool video from kip kay where in he tapped free energy from phoneline to power LED lamp. I tested my phone line with a multimeter. The readings were as follows; Voltage - 53.8V (DC) Amp - 61.9 So the power running through the phone is 3.33 watts approx. So which resistors and circuits should i use to harness all 3 watts of energy from this secret source?

Question by vic86m   |  last reply

need help for a creative!!!!!!!!!!

I would like to make a robot. simple , but very interesting things , you know because i'm not so expert at it ... is there anything that you recommend ?? it could be anything besides robot. if it's about LED , Line Follower, creaative tools or something .... please . i need it. thx so much .?

Question by gilang.darkwing   |  last reply

Dobo - A robot dog

Hey Guys,I've been exploring this site for a few months now but didn't make any post yet. I thought of making my first post here and to say hello to you all.Here's me at a glance, skip this if you want :). One part of me lives in Dhaka, Bangladesh, a graduate in Computer Science (2004) and works in Software Company, but the other (and perhaps the real) part of me is a just obsessed about C++, Digital Electronics, Machine Intelligence and of course, Robotics.I maintain the following blogs:My General BlogMy Robotics BlogI would like to introduce my latest robot, named 'Dobo' which is a robot dog. It looks nothing like a dog yet.. but soon it'll. Here goes some videos: Let me know how it looks. I have plans to improve it more soon and I've bought a cute skin for it. Look forward to have great time with you all!Regards,-Kaisar

Topic by kaisar   |  last reply

can i increase wattage by the following way?

I think i can increase wattage by placing three coils in the following way / / / L m n among them 'L' as primary and m,n as secondary so that when electricity is passed through L magnetic lines of force from that coil induces current to 'm'.as electricity passes through 'm' it again sends magnetic lines of force inducing current in 'n'.so that connecting 'm' , 'n' in parallel or series will give me increased wattage

Question by lohithg   |  last reply

Interfacing a robot with landline phones? Answered

What i would like is that i have an answering machine at home that starts after a certain amount of rings. What i want is that when the machine answers the robots listens in and waits for a certain sequence of keys to be pushed. It will then send the tone 1 down the line and somehow i would also like the cal to be ended(but that isn't necessary).

Question by wee_man   |  last reply

Infrared detector help? Answered

I have 2 infrared detectors (like the one in picture) with 3 pins and want to make a simple detector to turn power on and off. The reason is that I want to make a line following robot. I only need to be able to put enough power through it to power a relay on or a transistor. Please help I need to know what all of the pins do and how to use them. Or even better a curket dyagram that turns power on and off by infrared without using micro processors.

Question by David97   |  last reply

QRD1114 REPLACE MENT ,need help plz?

I am trying to make line following sensor ,from mr ignoblegnome instructable but i am not getting qrd1114, so i brougt two white line following sensor ,and one infrared sensor but i am not getting how to connect them and how to get output so i need how should i connect it ?

Question by roboguy22 

What to do with old robot? / Cybot

I found an old robot that was part of one of those 'build it yourself' magazine series. I was gonna eBay it but found there was actually quite alot of cool stuff in there so I've compiled a list and I'm gonna make an instructable using some of the parts, But I need ideas / help.Here are (the best) parts.2x sets of ultrasonic emitters / receivers2x LDRs large2x smaller photoresistors (used for line following)2x set of inrfa red emitter& reciever leds2x bright white leds + various others2x 9v motors & gear housingsLCD display 5cm squreeepromspeed controllers selector switches etcand a load of pre programmed processors that can't be reused.some more technical details here

Topic by madmanmoe64   |  last reply

Creating a chatbot or conversation robot.

Hi everybody.  I have a quick question I would like to throw out there and hope somebody can help. I am in the early stages of making an autonomous robot and one of the functions I would like it to have is the ability to hold a conversation with people. I have made a previous cardboard robot as a proof of concept for my next build and used an iPhone chatbot app which worked quite well, but I would like to make my own stand alone chatbot.    I am aware of the likes of "Pandorabot" and "Cleverbot" ect, but what I would love to do is program my own stand alone chatbot using the available hard drive memory on an old laptop I have laying around collecting dust, and use the Windows xp voice recognition to talk to it (speech to text) and have it respond with a spoken voice (text to speech) which would come out of a Bluetooth speaker located in the robot. I know my way around a computer to some degree but do not know how to program (although I did follow a program written down once to make an  analogue clock many moons ago), but with some hopefully straight forward instructions I am willing to learn and give it a go. I have a rough understanding what AIML is but don't know what I would need to use it. I want to go down this road as I want to have it off line, i.e not have to rely on an internet connection, except maybe my home network to connect to another device, not to rely on a second party server, and would like to put the old laptop to some use.  I know I bit about teaching or training a bot to respond, i.e, giving multiple phrases or questions with one meaning (eg Hello, Hi, What's up, Hi there ect,) and the bot to recognise and respond accordingly, and I'm aware it will be time consuming, but it's the basics, or starting blocks that I'm after, getting a bot up and running and ready to be taught or trained, and if it's something I can get my head around and it's something I could realistically do, I would love to give it a crack.  So, Is it reasonably possible for me to use my old laptop for the sole purpose to use it as a chatbot, what would I need to set this up, Can what I need to know, be broken down in to easy to follow steps for me or anyone to follow who does not have experience in this field, And what recourses are there that I could use if needed? Any help, thoughts and suggestions that anyone can offer to get me started on this idea really would be greatly appreciated, and may be of help to others too as I have not seen this sort of question asked anywhere on the inter web in regards to just using a home computer / laptop. The only information I can seem to find relates to online bots. So thank you in advance for any help offered and I look forward to any responses. Steve.  

Topic by steve-gibbs5   |  last reply

What Arduino board to use? Answered

As a university project we are making a robot based around a arduino board. The arduino board need to be able to control four stepper motors, two solenoids and have inputs from six analog sensors. The stepper motors will be contolled via EasyDriver stepper motor driver and the solenoids via relays. Does anyone have any suggestions for a suitable board? Also in terms of analog sensors, we need to detect where a hole is under the robot. We were thinking of using a system a bit like a line following robot with use of IR detectors. any suggestions on that?? Thanks

Question by benmurton   |  last reply

The use of soft circuits in robotics

Sheets of touch sensitive material seem perfect for giving robots a "skin" of sorts. This could easily allow for something along the lines of a robot pet that can tell when it is being petted. It would also be useful for robot grippers, to allow the robot to hold on without applying too much force. With a layer of durable plastic between the circuit and the cloth, the robot could be made water resistant. Not really sure where else to take this, but I think touch sensitive, water proof skin (and also whiskers) would go a long way to making better robot dogs and cats, and probably other kinds of robots.

Topic by MDude 

how to connect four channel line follower sensor to motor driver l293 ? how do i know if the sensor is working ?

I have this four channel line follower module . i need to connect this module to l293 motor driver. please anyone can tell how to ? how do i know if the sensor is working ? 

Question by Nb18   |  last reply