Worksheet

1.6 Project: draw a letter

Driving · Robot club · about 20 min

What this lesson is about

Plan a path, drive it, leave a trail.

• Plan first
• Stroke one
• Stroke two, two ways
• Your own letters

Questions 6 marks in all

1. [1 mark]The robot starts facing down the mat, at heading 180. What does forward(60, distance=60) draw?

   1. AA line down the mat
   2. BA line up the mat
   3. CA line to the right
   4. DNothing, because forward means up the mat

2. [1 mark]The robot is facing down the mat. Which command slides it towards the right of the mat, without turning?

   1. Aleft(60, distance=30)
   2. Bright(60, distance=30)
   3. Cturn_right(30, angle=90)
   4. Dbackward(60, distance=30)

3. [1 mark]The robot faces down the mat at heading 180 and runs turn_left(30, angle=90). What does heading() say? Give a whole number of degrees.

4. [1 mark]Put these lines in order to draw an L with a strafe, starting at the top left facing down.

   Number the lines 1 to 5 to put them in the right order.

   1. left(60, distance=30)
   2. print("done at", position())
   3. forward(60, distance=60)
   4. connect()
   5. from bugbot import *

5. [1 mark]Which way of drawing the second stroke keeps the corner of the L sharpest?

   1. AStrafing, because the robot does not turn
   2. BTurning, because the robot faces the way it goes
   3. CBoth are exactly the same
   4. DDriving backwards

6. [1 mark]Which of these letters need drive with rotation to draw well?

   Tick every answer that is true.

   1. AT
   2. BS
   3. CE
   4. DO
   5. EH

The task: draw an L

Start at the top left facing down. Drive the long stroke into the corner zone, then the short stroke into the goal. The 60 by 30 L above finishes about 4 cm short of the goal, so measure the zones on the mat and plan your own lengths.

# the two lines every program starts with: the commands, then the robot
from bugbot import *
connect()

# stroke one, stroke two

Plan your program here, then type it in and press Run.

Do it on the robot
www.bugbotlab.com/learn/1-6-project-initials/
The simulator checks it and tells you when it passes. Nothing to install, no account.

Challenges

1. Draw your first initial. Take a screenshot of the trail.
2. Draw two letters, lifting the "pen" between them: drive to the start of the second letter in one move.
3. Write stroke(cm) and corner(deg) functions and draw an E with them.