106 lines
3.1 KiB
Python
106 lines
3.1 KiB
Python
# Combo Dial Safe
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# for Adafruit Circuit Playground express
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# with CircuitPython
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import time
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import board
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import pwmio
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from adafruit_motor import servo
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from adafruit_circuitplayground.express import cpx
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pwm = pwmio.PWMOut(board.A3, duty_cycle=2 ** 15, frequency=50)
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# plug red servo wire to VOUT, brown to GND, yellow to A3
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servo = servo.Servo(pwm)
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cpx.pixels.brightness = 0.05 # set brightness value
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def unlock_servo():
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servo.angle = 180
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def lock_servo():
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servo.angle = 90
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correct_combo = ['B', 'D', 'C'] # this is where to set the combo
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entered_combo = [] # this will be used to store attempts
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current_dial_position = 'X'
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cpx.red_led = 1 # turn off the on-board red LED while locked
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lock_servo() # lock the servo
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while True:
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x_float, y_float, z_float = cpx.acceleration # read acceleromter
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x = int(x_float) # make int of it
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y = int(y_float)
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z = int(z_float)
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# four simple rotation positions, A-D
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# the combination entries are based on which letter is facing up
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#
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# A
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# .___.
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# . .
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# D . . B
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# . .
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# . .
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# .|_|.
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# C
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if x == 0 and y == 9:
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current_dial_position = 'A' # used to store dial position
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cpx.pixels.fill((0, 0, 255))
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if x == 9 and y == 0:
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current_dial_position = 'B'
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cpx.pixels.fill((80, 0, 80))
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if x == 0 and y == -9:
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current_dial_position = 'C'
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cpx.pixels.fill((255, 70, 0))
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if x == -9 and y == 0:
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current_dial_position = 'D'
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cpx.pixels.fill((255, 255, 255))
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# press the right/B button to lock the servo
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if cpx.button_b: # this is a more Pythonic way to check button status
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print('Locked/Reset')
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cpx.red_led = 1
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cpx.pixels.fill((50, 10, 10))
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lock_servo()
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cpx.play_tone(120, 0.4)
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cpx.pixels.fill((0, 0, 0))
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entered_combo = [] # clear this for next time around
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time.sleep(1)
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# press the left/A button to enter the current position as a combo entry
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if cpx.button_a: # this means the button has been pressed
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# grab the current_dial_position value and add to the list
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entered_combo.append(current_dial_position)
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dial_msg = 'Dial Position: ' + \
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str(entered_combo[(len(entered_combo) - 1)])
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print(dial_msg)
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cpx.play_tone(320, 0.3) # beep
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time.sleep(1) # slow down button checks
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if len(entered_combo) == 3:
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if entered_combo == correct_combo: # they match!
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print('Correct! Unlocked.')
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cpx.red_led = 0 # turn off the on board LED
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cpx.pixels.fill((0, 255, 0))
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unlock_servo()
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cpx.play_tone(440, 1)
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time.sleep(3)
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entered_combo = [] # clear this for next time around
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else:
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print('Incorret combination.')
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cpx.pixels.fill((255, 0, 0))
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cpx.play_tone(180, 0.3) # beep
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cpx.play_tone(130, 1) # boop
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time.sleep(3)
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entered_combo = [] # clear this for next time around
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