Doubt about service_quiz

Course Support ROS Basics In 5 Days (Python)
1

It is difficult to make a proper square in the quiz. I know the logic behind the code. Any suggestions on how to make a proper square. I have even added cmd_vel as 0 in between forward motion and turning in order to make the robot turn properly

2

We live in a broken world @steve26, so things are hardly perfect here :slight_smile:.

You move towards perfection at lower speeds (say 0.05) in addition to stopping before turning. This is especially necessary because of the high inertia of the bullyish BB8 ball :smiley:

1 Like
3

I have one more doubt. I have used the logic structure below as:

i =1 
j = 1
for i in range(1, repetitions+2):
     while j <=4:

The robot moves in a proper square but when I put 2 repetitions it only makes 1 repetition.

The loop, for some reason, exits when i=2. I don’t understand why. I’m sure this is the logic for the code works.

4

Screenshot from 2020-04-18 16-46-55
Screenshot from 2020-04-18 16-46-55953×164 25.1 KB
.

As you can see, it gets iterated from 1 to 3 but the robot never moved the second time.

5

Hi @steve26. I can’t see the complete picture with just that snippet. Could you send me a private message with the full code?

PS: to send a private message, click on my avatar and click on the Message icon.