Bender - the line following robot

Let's Make Robots Robots
1

This robot is a line follower for ISTROBOT competition (www.robotika.sk/contest).

 

It's brain is ATmega16 AVR connectable to the PC via Bluetooth - this allows to have the board programmed wirelessly via AVR109-based bootloade or to run some nice rbot monitoring and controling program on the PC or a mobile phone.

Line sensor is made of 5 QRD1114 reflectance sensors, the robot has also one GP2D120 IR ranger with analog output mounted on a microservo.

 

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 The gear is modified kit from our local robot store (in the Czech republic). Motors are driven by L293D.

 

More info on my website - projects.adamh.cz/LineFollower :-)

The attached video shows one of the first test with line senro - now it uses PID regulation which looks much better.

 

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Avoids obstacles, follows the line

  • Actuators / output devices: two geared motors
  • Control method: Bluetooth
  • CPU: ATmega16 AVR
  • Power source: 6× AAA cells or 12V adapter
  • Programming language: C
  • Sensors / input devices: GP2D120 IR
  • Target environment: indoor
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/bender-the-line-following-robot
2

Some changes made :slight_smile:

Some changes made :slight_smile:

3

sweet '‘line detector’'

made it yourself, or from a company?

 

also, why 5 QDR? planning on adding some more functionality in the future?

it’s looking good :slight_smile:

4

very slow :frowning:

very slow :frowning:

5

awsome

mind if i use the line follower board? i’ll just change it so i can use normal resistors instead of smd.

I made one too, with only 3 QDR, but i’ve been told i might need 5 in the future.

6

You can use whatever you

You can use whatever you want, sources and board designs are published on http://projects.adamh.cz/linefollower and http://projects.adamh.cz/linesensor - you will only need to translate the page via Google translate :slight_smile:

But I don’t say mi line sensor design is the best, now I would use more sensors with quite different layout. It’s better to make some “protosensors” to experiment with it…

7

yep

I will need to do some layout and shape changes to fit my robot, the two side sensors will have to be further to the front of the robot, it’s quite fast, and can easily dive off the stairs :smiley: