Handmade Line-Following Robot

[ssawan23]

gr888...!!!! my robo is same...

cooool

[technology49]

εισαι ελληνας? γιατι εγω ειμαι ελληνας και προσπαθω να φτιαξω ενα robot

[christsiav]

@technology49 ναι.

[ChosenDev]

Robots are my favorite pets!

[gioblublu]

Are you using PID algorithm???

[karnobatliataa]

hi how are u? i have read that book and i want to build that robot. have u soldered the stuff to the board or are u using a solderless breadboard? and also did u get ur parts from the uk or usa? im asking that because i live in the uk and dont know where to get my parts from, as he only references american suppliers in the book. anyhow i WIll build this robot as soon as i get the money awesome robot. you should get his second book, its awesome, i have heard. keep it up

[073wajid]

what type of motor do u use and plz display ckt dia

[8BlackKnight8]

what motors u use?? cause i use L293D IC for high current...but till my car wont move....must have been problem is in the motor

[sobeita]

I'm not into robotics yet, but when I get back to the States, I think I'll start. I wanted to ask, is there any way for you to reduce or eliminate the negative feedback here? I don't have a better term for it than that... he turns left, the straight line looks like it's to the right, he turns right, the line looks like it's to the left, and he wiggles back and forth without ever straightening out. It looks like there's only a binary switch between the left and right wheels. Any ideas?

[mohsenhsp]

nice can you please tell me that had you used microcontroller or what?Please

[christsiav]

@mohsenhsp I haven't used a microcontroller, although i could use one. The robot runs only with a LM393N voltage comparator chip fed by 2 photoresistors.

[mohsenhsp]

@christsiav hmm.ok thanks

[ThaDamian]

easier with just one light sensor

[supergenius1994]

how did you get enough torque for the wheels to move the body?, I have been trying to get mine to work for a long time, and I can't figure out how to solve this problem

[christsiav]

you need a transistor to drive your motor such as 2907.

[supergenius1994]

I thought that the problem was that I needed gears to increase the torque, is the 2907 a high power transistor?

[christsiav]

If sufficient power drives your motor then yes, by using gears you will likely increase the torque and move the robot. this may solve your problem. but if the motor is under-powered (usually this happens if it is fed powee by a logic chip) then you need a high power transistor like 2907.

Also there are ready-to-use motor driver chips available in online stores . google for more info

[BADelectRonique]

it's a great job !! but can you tell about the circuit please? thanks

[kirgy9]

awsome :D

[chemistrycoolguyscom]

separakalo re file grafismouto sta ellinika emporo enixero pos legontai sta ellinika mono na milo ellinika xero omos oxi genikes lexis ellinikes afto pou moo stiles stilemouto sta aglika epidi meno kai kanada ematha ta aglikes lexois

[chemistrycoolguyscom]

by the way am greek.

[chemistrycoolguyscom]

show us how you make the circuit robot board . and how did you make the robot move what part is that .that makes it go

[harleen150d]

great Job.......can u please share the circuit daigram of this LFR......

[theplayboy92]

can you please share the circuit diagram with me?

[godknose]

gr8 job.. appreciated.hv u tried hands on robosoccer,sumo bot etc???

[0jens09]

dkdkddkdkkk

[djtomak]

good job dude! 4/5

[eagle102938]

My son made one like these after reading David Cooks's "Robot Building for Beginners" too!

[chemy999]

is the robot in the movie the same one fron david cook?

[QChris]

from david's book?

[christsiav]

yes

[chemy999]

how do i figure out the max amount of amps an led can handle

[christsiav]

you can find the maximum current your LED can handle on the manufacture's datasheet. usually this value is around 30mA.

[fishstixman]

Very nice. I have the same book too. Try making everything smaller too. Put the motors and sensor pairs closer together for better performance.

[fethry30]

nice...really nice!!!

[fethry30]

nice..really nice!!

congrats...good job!!

[rainstryfe]

now only to strap a lawnmower on that thing

[flyingace15]

yea, haha that would make mowin the lawn easier,,,,