CircuitPython script for the Raspberry Pi Pico that reads the CPU temperature and displays it in morse code.

pico_morse_temperature.py

# Circuit Python Script that Blinks the Current Temperature in Celsius in Morse Code
# Modified July 2022 by Spike Snell from jay0lee's code below on github:
# https://gist.github.com/jay0lee/e3cec7b2d126e3887c5c899635aeef90

# Import all that we need
import board, digitalio, microcontroller, time

# Define the length of a dot
dot = 0.25

# Define dash length as three times dot length
dash = dot * 3

# Define the word length as seven times dot length
word = dot * 7

# Define the onboard LED 
led = digitalio.DigitalInOut(board.LED)

# Set the LED direction to OUTPUT
led.direction = digitalio.Direction.OUTPUT

# Define our morse numbers
morse_numbers = [
    [dash, dash, dash, dash, dash],  # 0
    [dot, dash, dash, dash, dash],   # 1
    [dot, dot, dash, dash, dash],    # 2
    [dot, dot, dot, dash, dash],     # 3
    [dot, dot, dot, dot, dash],      # 4
    [dot, dot, dot, dot, dot],       # 5
    [dash, dot, dot, dot, dot],      # 6
    [dash, dash, dot, dot, dot],     # 7
    [dash, dash, dash, dot, dot],    # 8
    [dash, dash, dash, dash, dot],   # 9
]

# This function converts an int to a digit list
def convert_int_to_digitlist(number):
    return [int(d) for d in str(number)]
    
# Loop forever
while True:

    # Get the current temperature of the microcontroller
    temp = int(microcontroller.cpu.temperature)

    # Print the current temperature
    print(f'C: {temp}')
 
    # Get the temperature digit list
    temp_digits = convert_int_to_digitlist(temp)

    # For every digit in the temp_digits list
    for d in temp_digits:

        # Get the morse numbers
        m = morse_numbers[d]

        # Print the morse numbers
        print(f'{d}: {m}')

        # For every dot or dash in m
        for dot_or_dash in m:

            # Set the LED value to true
            led.value = True
   
            # Sleep for the dot or dash time as appropriate
            time.sleep(dot_or_dash)

            # Set the LED value to false
            led.value = False

            # Sleep for a dot length of time
            time.sleep(dot)

        # Sleep for a dash time between each letter
        time.sleep(dash)

    # Sleep for a word amount of time between each temperature indication
    time.sleep(word)

There was an issue with the dot and dash list for the digit #1. I've also made some other modifications and comments, and updated the code to work with more up to date versions of circuit python.