Let's code the robot to avoid obstacles

Your LEGO BOOST kit's color sensor can detect six different colors: red, blue, green, yellow, black, and white. It can detect color from a maximum distance of 3 cm. Now, create the following setup before we start with the activities:

Figure 15.2 – Route setup for activity #1 and activity #2

Let's get started.

Activity #1

Go forward until the robot senses a red pole and change the brick light to red. Let's first write an algorithm to reflect this:

1. Move forward at 20% speed.
2. Wait until red is sensed.
3. Stop motor AB when red is sensed.
4. Change the brick light color to red.

The sample code for this activity is as shown in the following figure:

Figure 15.3 – Sample code

Let's now write a similar code for the robot to execute when it senses the blue brick.

Activity #2

Program your robot to turn left whenever it senses blue...