1. What you asked me to teach…
How to link the robot and the computer (Bluetooth)
How to turn on and off
How to connect the adaptor
Fluke card connection
Sec Getting Started
How to make the robot move
How to turn
How to stop
Control the speed
Sec Scribbler movements
How to create functions and methods
How to program in Python
Sec Simple Functions (names)
Sec Functions with Parameters and Return Values
Sec Creating and Using Modules
Sec Simple Python Loops
How to use the sensors
Sec Variables

2. What you asked me to teach…
How to take a picture
Sec Taking Pictures
How to know when you lost target
How to find colors
How to sense when you hit something
Sec Making Decisions in Python
Sec Image Processing and Perception

3. Scribbler Movements
Sec 9-3
Web Design

4. Objectives The student will:
Understand the basic movement commands for the Scribbler
Know how to create and execute a series of commands

5. Scribbler Movements
If you look at the scribbler from the bottom you will notice that it has 3 wheels.
The small wheel is for support only
The large wheels are motorized. Each wheel has it own motor.
You can control each motor individually.
motors( Left, Right)
Left and Right are in ranges from -1.0 to 1.0
Negative numbers turn the motor backward
1.0 is the max speed of the motor. Think of the numbers as % of total speed

6. Scribbler Movements - motors()
Examples:
motors(1.0, 1.0) – move forward
motors(-1.0, -1.0) - move backward
motors(1.0, 0) – tight circle to the right
motors(1.0, -1.0) – spin (turn) to the right
Note the action will continue until another command (i.e. stop() ) is issued.

7. Scribbler Movements - motors()
What do think will happen with the following commands:
motors(0,0)
motors(1, 0.5)
motors(1, -0.5)
motors(.25, -.25)

8. Scribbler Movements
Myro also provides built in functions for the most common movements:
forward(speed)
backward(speed)
turnLeft(speed)
turnRight(speed)
Stop()

9. Scribbler Movements
Another version of the commands accepts a second argument (parameter) which is the amount of time in seconds.
forward(SPEED, SECONDS)
backward(SPEED, SECONDS)
turnLeft(SPEED, SECONDS)
turnRight(SPEED, SECONDS)

10. Draw a Square
There is no way to tell the robot to move 5 feet or to turn right 90o
For Arty .28 works the best for the turn but that might not be right for your robot.
forward(1, 1) turnLeft(1, .28)

11. Translate and Rotate translate(speed) moves the robot forward or back.
rotate(speed) turns the robot left.
move(TRANSLATE_SPEED, ROTATE_SPEED) will perform a translate and rotate at the same time. The result will be a circle.

12. Executing a Series of Commands
If you would like to type a series of commands and have them executed all at once then you can…
Open a new window:
Type in the commands
Save the file (add a .py)
Run the module:

13. IDLE Tips – Command History
You can repeat a previous command by using IDLE's command history feature:
ALT‐p retrieves previous command
ALT‐n retrieves next
You can also click your cursor on any previous command and press ALT‐ENTER to repeat that command.

14. Summary Many different ways to move your robot.
motors(), forward(), backward(), turnLeft(), turnRight(), move(), stop(), etc.
You can type in a series of commands, save them and then have the IDLE shell execute those commands.

15. First Assignment Experiment with your robot to make a octogon:
Make the side a movement of 0.5 seconds (keep the octagon small).
The robot should end up roughly where it started and facing the same direction as when it started.
Once you have the commands that make a octagon, show it to me.
Read pages in Learning Computing with Robots.