Repository of examples

V2 9/3/08

1 – The TinyTurtle Subjects

Math, geometry, procedural programming, basic robotics

Language NXT-G

State Developed

Description The basic Logo turtle with its

main 4 motion commands It uses parameterized user blocks

Rt The Rt

command can be improved using the new parameter block instead of a common variable

Parameterized Rt

2 – The following head Subjects

Time programming, simple strategy, sensor management

Language NXT-G

State Developed

Description The sonar head follows your

hand

The program

LA LB

The program

LC

SA

The program

SB LALC

3 – The slope Subjects

Phisycs, sensor data logging and elaboration

Language NXT-G

State Developed

Description The sonar measurement is logged

and used to study a uniformly accelerated motion (due to the gravity acceleration)

The program

Uploading the data file

Analyzing the results

Analyzing the results

The measures

The theory

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sample1

sample2

sample3

sample4

sample5

sample6

displacement velocity

4 – Doppler Subjects

Physics, acoustic, controlling motion Language

NXT-G, NXC State

Developed Description

The doppler effect is used to estimate the constant speed of the vehicle

The obtain speed can be compared with the speed measured by the robot itself

Doppler

2Khz emission

5 – The positioner Subjects

Analytical and simple geometry, solution through an approximation algorithm, 2D cartesian motion

Language NXC (NXT-G)

State Developed

Description First the robot calculates its position

measuring its distance from two obstacles of known position, then it can reach a target position

Analytical solution

A solution through approximations

Depending of the area where the temporary solution is found, it is moved towards the final solution

6 – The shadow Subjects

Geometry, trigonometry, light sensing

Language NXC

State Developed

Description The distance between the light

source and the obstacle is indirectly calculated measuring the length of the shadow

Robotic setup

The solution

7 – Multithreaded follower Subjects

Multitasking and multibehavior, concurrent programming

Language NXT-G (NXC)

State Developed

Description An example to show the request of

multitasking for multibehavioral applications

Interferences on concurrent programming are shown as well

The solution

Multi behaviors

8 – Discovery Bool Subjects

Logic, Boolean algebra Language

NXC, NXT-G State

Under development Description

Discovering basic boolean operator through the motion of the robot

9 – Turing-bot Subjects

Theoretical computer science, simulation

Language NXC?

State Under development

Description Simulation of the Turing

machine

10 – Happy strings Subjects

Theoretical computer science, simulation, formal grammars and linguistic

Language NXC?

State Under development

Description Using a finite state automata

simulation (the robot physically moves from state to state) to recognize string properties

11 – Scaling?? Subjects

Geometry, Topography Language

?? State

Under development Description

The robot reproduces something using a given scale

12 – Easy proportions?? Subjects

Math, Geometry Language

?? State

Under development Description

A proportion (like 6:5=12:10) is given in terms of the length of the edges of a couple of rectangles

The robot verifies some properties ???

13 – Friend/Sister gravity Subjects

Math, physics Language

?? State

Under development Description

How to discover the gravity acceleration

14 – Trees Subjects

Computer science, theoretical infrmatics

Language ??

State Under development

Description The robot physically calculates

the width of a tree (as a data structure)

15 – Kind spring Subjects

Math, physics Language

?? State

Under development Description

How to calculate the elongation constant of a spring

16 – Intelligent interpreter Subjects

Artificial intelligence, coding Language

NXC State

Under development Description

A trained neural network is used to recognize ‘linear’ symbols like the Morse code that are translated in simple robot commands

17 – Bee-bot Subjects

Natural science, behaviors and strategies

Language NXT-G

State Developed

Description Using a light sensor, the robotic

bee try to find a ‘flower’ (a black area on the plane) following wider and wider paths

Alveare

Thank you for your attention

n – ?? Subjects

?? Language

?? State

Developed Description

?? ??