1  # SPDX-FileCopyrightText: 2018 Carter Nelson for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import board
 6  import busio
 7  import adafruit_ssd1306
 8  from simpleio import map_range
 9  from analogio import AnalogIn
10  from digitalio import DigitalInOut
11  
12  # Create the I2C bus
13  i2c = busio.I2C(board.SCL, board.SDA)
14  
15  # Define display dimensions and I2C address
16  WIDTH = 128
17  HEIGHT = 64
18  ADDR = 0x3d
19  
20  # Create the digital out used for display reset
21  rst = DigitalInOut(board.D7)
22  
23  # Create the display
24  display = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=ADDR, reset=rst)
25  display.fill(0)
26  display.show()
27  
28  # Create the knobs
29  x_knob = AnalogIn(board.A0)
30  y_knob = AnalogIn(board.A1)
31  
32  while True:
33      x = map_range(x_knob.value, 0, 65535, WIDTH - 1, 0)
34      y = map_range(y_knob.value, 0, 65535, 0, HEIGHT - 1)
35      display.pixel(int(x), int(y), 1)
36      display.show()