1  # SPDX-FileCopyrightText: 2019 Dano Wall for Adafruit Industries
  2  #
  3  # SPDX-License-Identifier: MIT
  4  
  5  """
  6  Crickit Exhibit
  7  Project by Dano Wall and Isaac Wellish
  8  Code by Isaac Wellish
  9  The Crickit Exhibit demonstrates almost all of the capabilities
 10  which CRICKIT can offer in one project
 11  """
 12  
 13  # Functions:
 14  #1. Hit a button to trigger a solenoid
 15  #2. Hit a button to turn on an electromagnet
 16  #3. Touch conductive tape to trigger a neopixel animation
 17  #4. Turn a potentiometer to control a servo
 18  #5. Shine light on the CPX to trigger and change the speed of a DC motor
 19  #6. Hit both buttons to trigger a sound from the speaker!
 20  
 21  import time
 22  from adafruit_crickit import crickit
 23  import board
 24  import neopixel
 25  from analogio import AnalogIn
 26  from simpleio import map_range, tone
 27  
 28  # RGB values
 29  RED = (255, 0, 0)
 30  YELLOW = (255, 150, 0)
 31  GREEN = (0, 255, 0)
 32  CYAN = (0, 255, 255)
 33  BLUE = (0, 0, 255)
 34  PURPLE = (180, 0, 255)
 35  
 36  # For signal control, we'll chat directly with seesaw, use 'ss' to shorted typing!
 37  # create seesaw object
 38  ss = crickit.seesaw
 39  
 40  # Two buttons are pullups, connect to ground to activate
 41  BUTTON_1 = crickit.SIGNAL1
 42  BUTTON_2 = crickit.SIGNAL2
 43  
 44  ss.pin_mode(BUTTON_1, ss.INPUT_PULLUP)
 45  ss.pin_mode(BUTTON_2, ss.INPUT_PULLUP)
 46  
 47  #solenoid at drive spot 1
 48  crickit.drive_1.frequency = 1000
 49  
 50  #electromagnet at drive spot 2
 51  crickit.drive_2.frequency = 1000
 52  
 53  # initialize NeoPixels to num_pixels
 54  num_pixels = 30
 55  
 56  # The following line sets up a NeoPixel strip on Crickit CPX pin A1
 57  pixels = neopixel.NeoPixel(board.A1, num_pixels, brightness=0.3, auto_write=False)
 58  
 59  #sleep var for pushing both buttons
 60  SLEEP_DELAY = 0.1
 61  
 62  # NeoPixel function
 63  def color_chase(color, wait):
 64      for i in range(num_pixels):
 65          pixels[i] = color
 66          time.sleep(wait)
 67          pixels.show()
 68      time.sleep(0.5)
 69  
 70  # potentiometer connected to signal #3
 71  pot = crickit.SIGNAL8
 72  
 73  # initialize the light sensor on the CPX and the DC motor
 74  light_in = AnalogIn(board.LIGHT)
 75  
 76  while True:
 77  
 78      # button + solenoid & electromagnet code
 79      # button 1 - solenoid on
 80      if not ss.digital_read(BUTTON_1):
 81          print("Button 1 pressed")
 82          crickit.drive_1.fraction = 1.0  # all the way on
 83          time.sleep(0.01)
 84          crickit.drive_1.fraction = 0.0  # all the way off
 85          time.sleep(0.5)
 86      else:
 87          crickit.drive_1.fraction = 0.0
 88  
 89      # button 2 electromagnet on
 90      if not ss.digital_read(BUTTON_2):
 91          print("Button 2 pressed")
 92          crickit.drive_2.fraction = 1.0  # all the way on
 93          time.sleep(0.5)
 94      else:
 95          crickit.drive_2.fraction = 0.0  # all the way off
 96  
 97      # Capacitive touch + neopixel code
 98      touch_raw_value = crickit.touch_1.raw_value
 99  
100      if touch_raw_value>800:
101          print("chase")
102          color_chase(PURPLE, 0.1)
103      else:
104          pixels.fill((0,0,0))
105          pixels.show()
106  
107      # potentiomter + servo
108  
109      # uncomment this line to see the values of the pot
110      # print((ss.analog_read(pot),))
111      # time.sleep(0.25)
112  
113      # maps the range of the pot to the range of the servo
114      angle = map_range(ss.analog_read(pot), 0, 1023, 180, 0)
115  
116      # sets the servo equal to the relative position on the pot
117      crickit.servo_1.angle = angle
118  
119      # Light sensor + DC motor
120  
121      # uncomment to see values of light
122      # print(light_in.value)
123      # time.sleep(0.5)
124  
125      # reads the on-board light sensor and graphs the brighness with NeoPixels
126      # light value remaped to motor speed
127      peak = map_range(light_in.value, 3000, 62000, 0, 1)
128  
129      # DC motor
130      crickit.dc_motor_1.throttle = peak  # full speed forward
131  
132      # hit both buttons to trigger noise
133      if not ss.digital_read(BUTTON_1) and not ss.digital_read(BUTTON_2):
134          print("Buttons 1 and 2 pressed")
135          for f in (262, 294, 330, 349, 392, 440, 494, 523):
136              tone(board.A0, f, 0.25)
137              time.sleep(SLEEP_DELAY)