Railway Patroller | Maqueen Mechanic Getting Started Guide Lesson 5

5-1. Project Introduction

If the Maqueen car detected that there is an obstacle on the way when patrolling, it uses the gripper to clamp and place it at a designated position. In this project, the line patrolling map and the assembled Maqueen Mechanic-Beetle need to be modified.

5-2. Hardware Preparation

Note: the color of electrical tape can be selected freely except black.

5-3. Modification Steps

5-4. Scene after Assembly

Note: the direction that the Maqueen car should be placed is shown in the graph.

5-5. Flowchart

Here we use a flowchart to analyze what functions the entire program needs to realize.

These are several situations the Maqueen will encounter when patrolling:

5-6. Program Link

https://makecode.microbit.org/_2LzDMCR9CFJt

5-7. Program Screenshot

5-8. Effect Display

When the Maqueen car detects obstacles in front of it during line-tracking, the gripper closes. Then it will transport the obstacle to the designated place and drop it, and continue driving along the line to detect if there are obstacles ahead.