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TheFollower

A simple, cheap and easy to use line following robot for educational use.

3D Render

Little Background

Line following robots are always a good alternative for learning about the motion, sensing and programming of small mobile robots. After competing several years on robotics competitions like Robocup Junior Rescue Line, I decided to build a small and simple robot for everybody to learn and play with this kind of bot. The opportunity came when I partnered up with two friends and their companies to build small line-follower robots for a workshop at the 2016 Arduino Day Event that we hosted.

  • Engenhoteca, helped me with lasercutting the wood material.
  • Robocore, gave all the hardware needed for 20 robots.

How-to-Build:

Check our Instructables for the detailed step-by-step instructions of how to assemble one of this robots.

  • The files on the DXF's folder are all the parts that you need to have lasercutted on 3mm wood (Plywood or MDF) to start the building.

  • There's also a passive "wheel" that is 3D Printed, at the STL's folder.

You have to lasercut on 3mm wood:

Item Quantity
BottomPlate x1
MiddlePlate x1
MiddleHolder x2
MotorHolderA x2
MotorHolderB x2
SensorSpacer x6

You have to 3D Print:

Item Quantity
PassiveWheel x1

Electronics Needed

Item Buy Real Dolar Qtd
Arduino UNO (BR) (World) R$ 85,00 $ 4,53 1
Arduino Motor Shield (BR) (World) R$ 69,00 $ 4,92 1
Battery Case (BR) (World) R$ 12,90 $ 1,75 1
Motors (BR) (World) R$ 33.00 $ 2,06 2
Wheels (BR) (World) R$ 20,00 $ 2,06 2
Light Sensors (BR) (World) R$ 17,00 $ 4,25 2

Programming

The programming is pretty straightforward. You must have installed Arduino IDE on your computer, or the program you like to use to upload to an arduino(and arduino-like boards).

This work is in progress, and all definitely finish this part later!

Credits

Thanks to my friends:

  • Marcos de Oliveira, that helped me lasercut and 3d print parts for the 20 first bots.
  • Ivan Seidel, helped me build the 20 first bots and got me into the Arduino Day 2016 where the workshop was held.
  • Rafael Riciardi, gave me a hand on assembling the first 20 robots.
  • Vinicius Milani, also gave me a hand on assembling the first 20 robots.