PJ018: Shake to Fill the LED Screen, with Replay Function

Hardware setup

• This project uses 1 Micro:bit board with a USB cable, nothing else needed.

Programming

• Basic

  • Shake to randomly add dot on the screen.

  • Add the dot's (x, y) coordinates to lists, replay the dots in orders when pressing LOGO.

• Advanced

  • Detect collided dot, warn a sound, avoid adding duplicated dot.

  • When the screen is fully filled, stop generating or adding dots, just show celebration icon

• Challenges (Optional)

  •  When detecting a collided dot, automatically retry generating new dot, and add it

  •  Use 1 list to store transformed (x, y)

[x] Simple: 30-60 minutes

[ ] Moderate: 1-2 hours

[ ] Challenging: more than 2 hours

The estimation bases on average situation without unexpected troubleshooting, assuming that the student meets prerequisites. It only indicates rough time needed to complete this project, but not about technical difficulty, not covering discussion and sharing time. Here is a possible breakdown:

• 5 minutes: Understand requirement and solution, collect materials 

• 20-30 minutes: Basic features

• 20-30 minutes: Advanced features

The challenge topic is not included in effort estimation, it could take extra 30-50 minutes for that part.

On-shake (Improved logic with duplication detection):

• Generate random coordinate of a dot, check if this dot is already existed

  • If existed: 

    • Play a warning sound

    • Blink this dot one time on the LED screen

    • Don't store this dot (x, y) to list

  • If not existed: 

    • Show the dot on LED screen

    • Store this (x, y) coordinate to list(s)

The purpose of this task is to practice using for-looping to access elements in the list, and a structural logical designing practice.

Keep previous logic, add a little extra codes to

• If the LED screen is fully filled, stop the game (no more new dots or coordinates creation), but show a happy face as celebration

The purpose of this task is to practice using variables, and keep structures of all logic blocks clearly.

Keep all other functions working, but improve this part:

On-shake (Improved logic with duplication detection and auto retry):

• Generate random coordinate of a dot, check if this dot is already existed

  • If existed: 

    • Play a warning sound

    • Blink this dot one time on the LED screen

    • Retry to generate a new (x, y), come back to the beginning of duplication checking

  • If not existed: 

    • Show the dot on LED screen

    • Store this (x, y) coordinate to list(s)

The purpose of this task is to practice using for-looping to access elements in the list, using functions to keep the code well organized, and a structural logical designing practice.

In this challenge, the "duplication checking" and "random (x, y) generating" will be triggered for more than 1 time, then it's necessary to improve the code structure to group those parts as Functions for better logic readability and reusing.

Stand in front of the class, share with your group what you have made, please cover important points

• Tell what it is your product

• Demonstrate how it works

• Explain how it works

Share with your group about

• What troubles you met

• How you analyze

• How you get help

• How you solve it

• What you have learnt