matrix8x8 working with dot by dot and ht16k33 library

Author: Mikey Sklar

Matrix_7-Segment_LED_Backpack_Raspberry_Pi/README.md

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+# Matrix_7-Segment_LED_Backpack_Raspberry_Pi
+
+Code to accompany this tutorial:
+https://learn.adafruit.com/matrix-7-segment-led-backpack-with-the-raspberry-pi/

Matrix_7-Segment_LED_Backpack_Raspberry_Pi/matrix8x8_test.py

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+# Import all board pins.
+import time
+import board
+import busio
+from adafruit_ht16k33 import matrix
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# creates a 8x8 matrix:
+matrix = matrix.Matrix8x8(i2c)
+
+# edges of an 8x8 matrix
+col_max = 8
+row_max = 8
+
+# Clear the matrix.
+matrix.fill(0)
+col = 0
+row = 0
+
+while True:
+
+    # illuminate a column one LED at a time
+    while col < col_max:
+        matrix[row, col] = 1
+        col += 1
+        time.sleep(.2)
+
+    # next row when previous column is full
+    if row < row_max:
+        row += 1
+        col = 0
+
+    # clear matrix, start over
+    else:
+        row = col = 0
+        matrix.fill(0)