Initial commit

Combo_Dial_Safe/main.py

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