Ir al enlace abierto de la presentación con varios videos / Go to open link with several video presentation: https://docs.google.com/presentation/d/18E6XBIRJybwqKmilDm-Aot5RixqL1QMss-aiTkpLqSM/pub?start=false&loop=false&delayms=3000

1. Great Robot selects balls
programmed in Scratch
BARCELONA
FROM LOGO TO
SCRATCH 2.0
Technology Teacher:
Juan Ramón Fernández
tecnoelx@gmail.com

2. history
* In Spain the subject of technology started to be taught in
the Secondary Schools in 1990, with students aged 12 to
17 years
*Among the blocks of content is Control and Robotics
*The Logo language has been widely used in the
classroom-workshop to control the projects made by​​
students
*We have always tried to use recyclable materials
*We can see two balls selected robots programmed in
Logo

3. small
small

4. medium

5. other project with Logo

6. XL robot parts
finger
hand
arm
limit switch
controller
cards
white
deposit
blak
deposit
LDR
resistance
cams

7. description
* This is a robot whose main task is to classify balls white or black
*The robot is controlled by a program in Scratch
*The machine and the program communicate using 3 controller cards with light-dependent-resitor LDR
"sensor screen", which are glued to the computer screen, and by means of a mechanical finger
that will operate a keyboard

8. design made in Google SketchUp

9. operation
* The arm motor drives the bike wheel.
*The wheel has cams which actuate a limit switch, this allows the arm to stop in white deposit , black
deposit and the initial ramp .
*At the end of the arm is installed a "small hair dryer" that sucks up table tennis balls

10. By loading program costumes on the computer screen ,these consist of bars may be white or
black. On these bars will place the LDRs to control the motors.
We have 3 motors:
ARM MOTOR : to move the wheel.
HAND MOTOR "small hair dryer" , to catch the ball
FINGER MOTOR to move the mechanical finger.
Communication between machine
and computer

11. construction process

12. circuit controller card
made with simulation Cocodrile software

13. general circuit
made with simulation Cocodrile software

14. Below each "sensor screen", were placed the
respective resistance LDR, to receive the
corresponding signals of the screen.
Inside the hand also needs another LDR,
which is the sensor that will distinguish if the
ball is white or black , If the ball is white finger
is pressed
(it's a logic gate "and".)
robot "brain"

15. the robot positions
12 3

16. 1. In the initial position the hand is actuated
2.then the arm is directed towards the white
deposit. On white tank analyzes the color. If white
mechanical finger touches the key, which allows
you to jump to a subroutine. It stops the hand,
drops the ball and goes non-stop to initial ramp..
3. If it's black, the finger does not work, follows up
black deposit, the hand drop the ball and will go to
initial ramp.
operating steps

18. Scratch costumes

19. Scratch code

20. Watch the code

21. the project works!!!!!!!

22. The students team

23. Thanks Master Ramón Gonzalo, we
have learned a lot from you!!!!!!

24. 1. creativity
2. motivation
3. Easy to use
4. Easy to share
5. Programming real projects built by students
6. Easy use for all ages
my 6 main reflections to use Scratch
in the classroom:

25. a country without
technological education in
its educational system is a
country in process of
underdevelopment
my only reflection on Technology
Education:

26. The XXL select balls
MAYBE,Our future project????
and most importantly, a class of motivated STUDENTS with a
TEACHER who will guide them

27. I also had fun with my family
practicing English by SCRATCH

28. THANK YOU FOR YOUR ATTENTION
Course 2012/13
Elche, Spain, 1 º High School, Industry Technology I
Students: David, Paula, Migue Angel, Jordi, Aitor,
Imanol and Fran
Technology Teacher: Juan Ramon Fernandez
tecnoelx@gmail.com