Introducing Robotics using EV3, based on FLL

1. Introduction to Robotics

2. What is a Robot
A robot has four types of elements:
● the controller (controlling autonomous
operations of the robot),
● sensors,
● actuators(motors, convert electricity to motion)
● mechanical/kinematic components( moving
parts).

5. Lego EV3 Robot

6. a. EV3 brick
b. two large motors
c. one small motor
d. color sensor
e. touch sensor
f. gyro sensor
g. ultrasonic sensor
On EV3 brick, which ports do the
sensors connect to, and which ports
do the motors connect to
a. A, B, C, D
b. 1,2,3,4

7. Gears
Wheels with teeth that mesh with each other. Because
the teeth lock together, they can efficiently transfer force
and motion.

8. Tires & Hubs, Beams, Connector
pegs

9. Programming

10. Programming a Medium Motor
1. Port Selector
Many programming blocks require that you select the ports on the EV3
Brick (A, B, C, D, 1, 2, 3, and 4) that these blocks will use.
Q: Where is the port selector on this programming block?
Q: What port should your medium motor be connected?

11. 2. Mode Selector
A programming block can be used in different modes. Eg
medium motor can be in these modes:
A. On, this starts the motor
B. Off, this stops the motor
C. On for seconds, turns the motor on for the number of
seconds
D. On for Degrees, turns the motor on for the number of
degrees
E. On for Rotations, turns the motor on for the number of
rotations
Q: Where is mode selector in diagram?
Q: Which mode is this programming block in?

12. 3. Inputs
Inputs are the details of how the motor will operate.
Power:
Q: How much power will this motor operate? 0% power, 25% power, 50%
power or 100% power
Brake at end: Applies when the block finishes.
If True, the motor is stopped immediately and is held in position.
If False, motor power stops and the motor is allowed to coast.
Q: Will this motor brake at the end?

13. Large Motor
Which of these are correct:
A. Motor will turn for 900 seconds
B. Motor will turn for 900 degrees
C. Motor will turn for 900 rotations
D. Motor will operate at 100% power
E. Motor will operate at 50% power
F. Motor will operate at 75% power
E. Motor will not stop at the end
G. Motor will stop at the end
H. There is also a start block, which starts our program
I. There is also an end block, which ends our program

15. This program has a loop named “01” that is configured to repeat 6 times.
However, a second running sequence waits for a touch sensor to be pressed, and
uses the Loop Interrupt block to stop the loop early if the touch sensor is pressed.

16. FLL, First Lego League

17. FLL: Robot Game, Missions
M08 – Composting – Discarded organic material doesn’t have to
become waste. It can be converted into fertiliser.
● Basic Mission Description: Start the Composting process. After
some time, it will eject Compost.
● Specific physical requirement, visible at the end of the match
(Score Only One Way):
• Value: 60 The Compost is ejected, but not completely in
Safety.
• Value: 80 The Compost is completely in Safety.

20. That's it.