Line follower with Arduino

An Arduino project implemented in the Robotics club “Young Hackers” in our school (Experimental Elementary School of Florina).

Bill of materials:

  • 1 Arduino Uno
  • 2 dc gear motors with wheels
  • 1 L293D driver for controlling the motors
  • 1 Infrared Obstacle Avoidance Sensor
  • 1 Infrared Tracking sensor
  • 2 battery cases and ΑΑΑ batteries
  • 1 switch
  • Jumper wires
  • 1 Breadboard

At first we used a pre-cut plexiglass frame for our vehicle. Later on our students designed and made their own frame using cardboard and a table tennis ball along with a 3d printed design (https://www.thingiverse.com/thing:1728714) as a castor wheel.

In order to connect the two motors to Arduino and the L293D driver we followed instructions students found on line and are depicted in the following image.

We connected the two motors to PWM pins in Arduino so as to control the speed (0-255 values) and not just their state (on-off).

The schematic and program was made using tinkercad where all our students have accounts. You can see the final design and program here: https://www.tinkercad.com/things/0ZTQYQ60tYK

Our students presented the line follower on various festivals and exhibitions at the end of the year.

The final result
Cardboard frame
Cardboard frame
Plexiglass frame

Mars Colony

This is the plan and implementation from the team Top Six (students in Robotics Club) for the “2018 PanHellenic Robotics Competition: Living on Mars”.

Some of the problems we will have to face on Mars

  • Too thin atmosphere and lack of oxygen
  • Low Gravity
  • Sandstorms

Students proposals:

  • Create domes that will contain earth-like atmosphere and oxygen generated by power plants.
  • Sandstorm protection shields
  • Rotating habitats for compensating the lack of gravity.

The lego construction:

  • A rotating sandstorms shield (Building instructions)
    • When there is high wind (microphone) it enables the warning lights.
    • When the storm cloud is near (motion sensor) the shield starts rotating.
    • When the cloud goes away (motion sensor) the shield stops rotating.
  • Oxygen plant (Building instructions)
    • A piston and fan that can count the tons of oxygen created with the tilt sensor.
  • Artificial Gravity (Building instructions)
    • The habitat inside the dome is rotated so as to create artificial gravity.
    • A motion sensor counts the number of rotations

Outcomes:

Tourism on Mars!

This is the plan and implementation from the team Top Mars (students in Robotics Club) for the “2018 PanHellenic Robotics Competition: Living on Mars”.

Let’s go a vacation to Mars!

  • A serious prospect for income in order to finance Mars Colonization will be tourism.
  • Mars has plenty of sightseeing!
  • We should build tourism infrastructure to attract visitors to Mars.

Students Proposal:

Outcomes:

Mars Space Elevator

This is the plan and implementation from the team IQ Robots (students in Robotics Club) for the “2018 PanHellenic Robotics Competition: Living on Mars”.

Mining in Mars

  • There are strong evidence that Mars has great quantities of useful ore like Aluminum, Magnesium, Titanium, Chromium, Gold etc.
  • Some scientists believe that we could create mines on Mars.
  • In order to export ore from Mars mines in a sustainable way we could build a space elevator to transfer the ore outside the Mars atmosphere.

Students proposal

  • An automate vehicle to transfer ore from the mines to the elevator (Initial design)
  • An automated space elevator to transfer ore outside the Mars atmosphere to docking platforms. (Initial design)

Outcomes

Terraforming Mars

This is the plan and implementation from the team The Builders (students in Robotics Club) for the “2018 PanHellenic Robotics Competition: Living on Mars”.

Designing the ecosystem of Mars

  • Mars gets far less light from the sun than earth does and does not have the nutrients needed for plants to grow.
  • NASA investigates the possibility to create oxygen in mars and plant algae in specially designed bottles.
  • New robotic vehicles will be needed that can go in hard conditions and plant the algae in the right places.

Students proposal

  • A walking robot (Initial design from jkbrickworks):
    • Searching craters that could have the right amount of ice (motion sensor)
    • Tests the craters for ice with the motion sensor (white ice – black no ice)
    • Unloads the bottles of algae (tilt sensor)
  • A robotic laser beam (Building instructions):
    • Communicates with the walking robot and gets the coordinates of the places where algae was planted. Then it sends the laser beam there to help the seeds grow (tilt sensor).

Outcomes