Special gift for Michael Horne

code.py

# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

# Customised by David Glaude for Michael Horne

# Download the latest version of the IS31FL3731 library: https://github.com/adafruit/Adafruit_CircuitPython_IS31FL3731/archive/master.zip
#  soon available from https://circuitpython.org/libraries in the "Bundle Version 6.x"
# Also take the adafruit_framebuf too from the library bundle
#
# Download the font font5x8.bin from https://github.com/adafruit/Adafruit_CircuitPython_framebuf/blob/master/examples/font5x8.bin
#  also available from https://circuitpython.org/libraries in the "Bundle Examples" in the adafruit_framebuf library
#
# Put the libraries in either *.py or *.mpy in the /lib folder from your CIRCUITPYTHON drive_mode
# Put the font5x8.bin in the root, together with this file as code.py
# Enjoy
#

import board
import busio
import adafruit_framebuf

# uncomment next line if you are using Pimoroni 11x7 LED Matrix Breakout
from adafruit_is31fl3731.matrix_11x7 import Matrix11x7 as Display

# Create the I2C bus
i2c = busio.I2C(board.GP21, board.GP20)

#display = Display(i2c)
display = Display(i2c)

text_to_show = "Hello Michael"

# Create a framebuffer for our display
buf = bytearray(32)  # 2 bytes tall x 16 wide = 32 bytes (9 bits is 2 bytes)
fb = adafruit_framebuf.FrameBuffer(
    buf, display.width, display.height, adafruit_framebuf.MVLSB
)

frame = 0  # start with frame 0
while True:
    for i in range(len(text_to_show) * 9):
        fb.fill(0)
        fb.text(text_to_show, -i + display.width, 0, color=1)

        # to improve the display flicker we can use two frame
        # fill the next frame with scrolling text, then
        # show it.
        display.frame(frame, show=False)
        # turn all LEDs off
        display.fill(0)
        for x in range(display.width):
            # using the FrameBuffer text result
            bite = buf[x]
            for y in range(display.height):
                bit = 1 << y & bite
                # if bit > 0 then set the pixel brightness
                if bit:
                    display.pixel(x, y, 50)

        # now that the frame is filled, show it.
        display.frame(frame, show=True)
        frame = 0 if frame else 1