1  # SPDX-FileCopyrightText: 2019 Mikey Sklar for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import time
 6  import board
 7  import busio
 8  from adafruit_ht16k33 import segments
 9  
10  # Create the I2C interface.
11  i2c = busio.I2C(board.SCL, board.SDA)
12  
13  # Create the LED segment class.
14  # This creates a 14 segment 4 character display:
15  display = segments.Seg14x4(i2c)
16  
17  # Clear the display.
18  display.fill(0)
19  
20  # set brightness, range 0-1.0, 1.0 max brightness
21  display.brightness = 1.0
22  
23  # show phrase on alphanumeric display
24  message = "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG"
25  count = 0
26  
27  # print one character at time with short sleep
28  # creates smooth scrolling effect
29  while count < len(message):
30      display.print(message[count])
31      count += 1
32      time.sleep(0.3)
33  
34  # Can just print a number
35  display.print(42)
36  time.sleep(1)
37  
38  # Set the first character to '1':
39  display[0] = '1'
40  # Set the second character to '2':
41  display[1] = '2'
42  # Set the third character to 'A':
43  display[2] = 'A'
44  # Set the forth character to 'B':
45  display[3] = 'B'
46  time.sleep(1)
47  
48  numbers = [0.0, 1.0, -1.0, 0.55, -0.55, 10.23, -10.2, 100.5, -100.5]
49  
50  # print negative and positive floating point numbers
51  for i in numbers:
52      display.print(i)
53      time.sleep(0.5)
54  
55  # print hex values, enable colon
56  for i in range(0xFF):
57      display.fill(0)
58      display.print(':')
59      display.print(hex(i))
60      time.sleep(0.25)