To keep the crew mentally sharp and entertained, the new commander has requested a game that challenges the cadets’ memory. As a cadet, you are tasked with creating “Space Memory Match,” a game where LEDs flash in a sequence that the players must remember and replicate. With each round, the sequence gets longer, testing the cadets’ memory and concentration. This game will help improve their cognitive abilities and provide a fun, engaging activity aboard the Nebula Raider.

Components Needed:

Raspberry Pi Pico WH Microcontroller

LEDs (4, different colors or positions)

Push buttons (matching the number of LEDs)

Buzzer (optional for sound feedback)

LCD1602 IIC/I2C Blue Backlight Display

Resistors

Breadboard

Jumper wires

Instructions:

Set Up the Circuit:

Connect each LED to a GPIO pin on the Raspberry Pi Pico (e.g., GP0, GP1, GP2, GP3) with appropriate resistors.

Connect each push button to a GPIO pin on the Raspberry Pi Pico (e.g.,

GP4, GP5, GP6, GP7) using a pull-down resistor configuration.

Connect the LCD1602 display to the Raspberry Pi Pico using the I2C interface (SDA to GP8, SCL to GP9).

Optionally, connect a buzzer to a GPIO pin on the Raspberry Pi Pico (e.g., GP10) for sound feedback when a button is pressed.

Circuit Diagram

Write the Code:

Open your coding environment and write the following Python code to create the Space Memory Match game.

from machine import Pin, I2C
from time import sleep
import random
from lcd_api import LcdApi
from i2c_lcd import I2cLcd
 
# Initialize LEDs and buttons
leds = [Pin(19, Pin.OUT), Pin(18, Pin.OUT), Pin(17, Pin.OUT), Pin(16, Pin.OUT)]
buttons = [Pin(12, Pin.IN, Pin.PULL_DOWN), Pin(13, Pin.IN, Pin.PULL_DOWN), Pin(14, Pin.IN, Pin.PULL_DOWN), Pin(15, Pin.IN, Pin.PULL_DOWN)]
 
# LCD setup
I2C_ADDR = 0x27
I2C_NUM_ROWS = 2
I2C_NUM_COLS = 16
 
i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)
 
# The sequence to follow and the initial game level
sequence = []
level = 1
 
def show_sequence(seq):
    """
   Function to display the sequence using LEDs.
   Each LED in the sequence is turned on for 0.5 seconds and then off for 0.5 seconds.
   """
    for index in seq:
        leds[index].on()
        sleep(0.5)  # LED is on for 0.5 seconds
        leds[index].off()
        sleep(0.5)  # Pause for 0.5 seconds before the next LED
 
def get_input():
    """
   Function to read the player's input.
   Waits for the player to press the buttons in the sequence and records the order.
   """
    user_input = []
    for _ in range(len(sequence)):
        while True:
            for i, button in enumerate(buttons):
                if button.value() == 1:  # Button is pressed
                    leds[i].on()
                    sleep(0.5)  # LED is on while the button is pressed
                    leds[i].off()
                    user_input.append(i)  # Add the index of the pressed button to the user's input
                    while button.value() == 1:
                        pass  # Wait until the button is released
                    break  # Exit the while loop to get the next input
            else:
                continue
            break
    return user_input
 
# Main game loop
while True:
    lcd.clear()
    lcd.putstr("Level: {}" .format(level))
    sleep(1)
    print("Level", level)
    new_color = random.randint(0, 3)  # Randomly select the next LED in the sequence
    sequence.append(new_color)  # Add the new LED to the sequence
    show_sequence(sequence)  # Show the current sequence to the player
 
    user_sequence = get_input()  # Get the player's input sequence
    if user_sequence == sequence:  # Check if the player's input matches the sequence
        print("Correct! Moving to the next level.")
        lcd.clear()
        lcd.putstr("Correct! Level+")
        level += 1  # Increase the level if the player is correct
        sleep(1)  # Short pause before starting the next level
    else:
        print("Wrong sequence! Game Over.")
        lcd.clear()
        lcd.putstr("Wrong! Game Over")
        sequence = []  # Reset the sequence
        level = 1  # Reset the level
        sleep(2)  # Short pause before restarting the game

Test the System:

Upload the code to the Raspberry Pi Pico and run it.

Observe the LEDs flashing in a sequence and try to replicate it by pressing the corresponding buttons.

Ensure the system accurately verifies the user input and provides feedback on the LCD.

Learning Outcomes:

Day 12: New Cadet Quality Tester

Circuit Diagram