1. LEGO MINDSTORMS EV3 training
Ramon Rantsus Heilo Altin

2. Our partners, sponsors, companies, institutions that care…

3. LEGO LEGO – “leg godt” – play well
Created 1932 – Ole Kirk Christiansen
Location: Billund, Denmark
6-th toy producing company in the worl
In Estonia 132 schools have robot sets
Work is based mostly extracurricular activities
Competitions, projects
FIRST® LEGO® League
Support: NPO Robootika, University of Tartu
Mida tähendab LEGO?

5. EV3 INTRODUCTION

6. BATTERY Capacity 2050 mAh Charge time – less than four hours
Can use AA batteries

7. SENSORS

8. MOTOR
Built in reducer which enables to reduce speed and increase torque
Accuracy (1°)

9. SCREEN EV3 Name USB connection Wireless connection Battery level
1 – Cancel button
2 – OK button
3 – Navigate
Sinihammas aktiveeritud aga pole nähtav ega ühendatud; Aktiveeritud ja nähtav aga pole ühendatud; Aktiveeritud ja ühendatud teise seadmega; Aktiveeritud, ühendatud ja nähtav; WiFi aktiveeritud aga pole ühendatud; Aktiveeritud ja ühendatud

10. Indicator lights Punane põleb – Käivitumine, uuendamine, sulgemine
Punane vilgub – Hõivatud
Oranž – Häire, valmisolek
Oranž vilgub – Häire, töös
Roheline põleb – valmisolek
Roheline vilgub – programm töötab

11. EV3 ports
Anduripordid, mootoripordid, kõlar, USB ja SD kaart

12. Battery Don’t use different batteries
Remove batteries if EV3 is not in use for long time
Don’t use damaged batteries
Don’t charge batteries!
Economical use of battery Reduce volume Use sleep mode Switch off bluetooth and WiFi if not needed Don’t hold motors stopped when not needed

13. PROGRAMMING

14. PROGRAMMING

15. PROGRAMMING

16. MISSION 1 Program robot using controller: 1. Drive straight 5 sec
3. Drive straight until obstacle

17. MISSION 2
Program robot drive square

18. Sound pressure decibel
SOUND SENSOR
Measure sound pressure(volume) decibel
Range 0-100
Sound pressure decibel
Consequence
160
Physical injuries 90
Loud sound 80
Scream 70
Speech 60
Office/ talking in distance 50
Quiet living room

19. MISSION 3
Program robot to turn when hands are clapped

20. MISSION 4
Program robot to turn when sound level changes. Choose NXT Sound Sensor – Change – dB
Sound level is yours to select

21. Touch sensor Works as simple switch Three positions
LEGO cross is on the front of the sensor

22. MISSION 5 Make a program: 1. Drive until obstacle
2. Drive back and turn
3. Drive towards starting point until there is sound

23. LIGHT SENSOR Receiving diode Lighting diode
Includes LED (can be switched off)
Enables to measure reflected or ambient light
Can measure 7 different colors
Receiving diode
Lighting diode

24. MISSION 6
Program robot to drive between to lines: when first line is reached, robot goes back. When rear line is reached, robot goes forward again.

25. ULTRASONIC SENSOR Range 3-250 cm Includes microprocessor
Bigger the object, better it works
Accuracy 1 cm
Can detect other ultrasonic sensors
SIGNAL
OBJECT
SIGNAL
Kaugus kuni 2,5m

26. MISSION 7
Program robot to stop 30 cm from obstacle

27. GYRO SENSOR Can detect robot rotation speed and angle
Enables to make precise turns and balance robots
Angle accuracy ± 3º
Max rotation speed 440 º/s
Kaugus kuni 2,5m

28. MISSION 8
Make the robot turn 90° with gyro sensor

29. MISSION 9
Make the robot to follow line

30. MISSION 10 Make the robot drive by sound sensor:
If sound level is below or equal 50 dB – robot drive straight
If sound level is above 50 dB – robot turns right

31. MISSION 11 – Taxi drive Program robot to drive through model city
Driving can be programmed using rotation sensors or outer sensors learned before

32. MISSION 12 – parallel programming
Car burgler alarm: robot makes sound when
Robot is touched
Robot is approached too close
There is loud sound
Robot is moved - gyro
Every mission is in different branch

33. MISSION 13 - screen Display smiley face on robot screen!
For that we use screen block

34. MISSION 14
Make a robot that listens surrounding sound. If it is quiet, robot makes happy face. If it is loud, robot makes sad face.

35. MISSION 14 (Hint)
First you may add switch and make it controlled by sound sensor. You can also set the level of sound
Next, add blocks what to do if room is quiet
Robot makes happy face
Robot makes sad face

36. MISSION 15 Write operation „1+1=2“ to screen
Use text block and screen block.

37. Here is operation 1+1=2 written to screen
SOLUTION 15
Here is 1+1
Here is “1+1” and =2
Here is operation 1+1=2 written to screen

38. MISSION 16 Write operation „14875+36987 =„ to screen
Make the robot to calculate answer

39. SOLUTION 16 Here is everything written on screen
Here is calculated
Here is
Here is everything written on screen
Here is added“ ” and “=“ and right answer

40. MISSION 17 - Animation
Make a cool cartoon using screen images. Cartoon should be at least 20 sec in length
Animation must have point and punch line .

41. MISSION 18 – Compare blocks
Logic
Make a robot that follows a human being. If person is standing 30 – 40 cm away, robot waits.
If person is further, robot drives towards a person
If person is closer, robot increases distance

42. MISSION 19– Random number
Make a robot:
Drive until obstacle (touch sensor or sonar)
Drive back
Turn random time to random direction
Start from beginning

43. Collecting data
Demonstration – Collecting data from sound sensor

44. MISSION 20 – Interrupt loop
Following a line with obstacle
Robot must follow a black line until there is obstacle and then tries to pass it.
Two ways to interrupt a loop:
Loop condition is set by distance sensor
Use loop interrupt

45. MISSION 21 – LEGO Space Challenge
Solve LEGO Space challenge (group work)

46. APPROACHES Working in couples Some missions require larger groups
In most cases, one student builds a robot, another programs it
Usually two school lessons in a row (minimum)
Robot is tool for solving problems, not an object

47. APPROACHES Mission must be personal, have meaning
Students encounter interest to solve mission
Students face real problems. Solving these problems require knowledge from school lessons. Now this knowledge has a meaning for them because there is a real need for it.
Process must be documented and conclusions must be made – reflective learning
Teacher is just a coach

48. APPROACHES– rules in classroom
Manual from sample course

49. APPROACHES GENERAL Discovery learning Individual tutoring
Problem based learning
Competition based learning

50. WHAT HAVE WE LEARNT? 4 sensors – touch, sound, light and ultrasonic
4 output ports – motors
LEGO EV3 programmable brick
Connection: USB, WiFi, Bluetooth