1  # SPDX-FileCopyrightText: 2018 Limor Fried for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import time
 6  from busio import I2C
 7  import analogio
 8  from adafruit_seesaw.seesaw import Seesaw
 9  from adafruit_seesaw.pwmout import PWMOut
10  from adafruit_motor import motor
11  import board
12  
13  light = analogio.AnalogIn(board.LIGHT)
14  
15  
16  print("Theramin-like turning")
17  
18  # Create seesaw object
19  i2c = I2C(board.SCL, board.SDA)
20  seesaw = Seesaw(i2c)
21  
22  # Create one motor on seesaw PWM pins 22 & 23
23  motor_a = motor.DCMotor(PWMOut(seesaw, 22), PWMOut(seesaw, 23))
24  motor_a.throttle = 0 # motor is stopped
25  
26  def map_range(x, in_min, in_max, out_min, out_max):
27      # Maps a number from one range to another.
28      mapped = (x-in_min) * (out_max - out_min) / (in_max-in_min) + out_min
29      if out_min <= out_max:
30          return max(min(mapped, out_max), out_min)
31      return min(max(mapped, out_max), out_min)
32  
33  while True:
34      print((light.value,))
35      motor_a.throttle = map_range(light.value, 500, 8000, 1.0, 0)
36      time.sleep(0.1)