Unchained Melody – How to make (ghost) slime with Crickit @adafruit #crickit

Unchained Melody – How to make (ghost) slime with Crickit (video). Code and guide.

Circuit Playground Ghosty Bb

https://www.adafruit.com/crickit
https://github.com/adafruit/Adafruit_Learning_System_Guides/tree/master/Crickits
https://www.youtube.com/playlist?list=PLjF7R1fz_OOW4YvQEoRLmocKUuOgvI-wh

HOW TO MAKE SLIME:
Pour 1 cup of glitter glue into a ROBOT bowl.
Add 1 tablespoon of baking soda.
Mix well with ROBOT FRIEND.
Add 1 tablespoon of contact lens solution.
Mix well with ROBOT FRIEND.

Ladyada was unable to get to sleep. Feeling restless she decided to visit her workshop and make some slime to help soothe her soul. Then her companion showed up to lend a hand and have fun together!
https://learn.adafruit.com/adafruit-crickit-creative-robotic-interactive-construction-kit/slime-night

GHOST pottery scene:
https://www.youtube.com/watch?v=CXfxUVjHFl0

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from digitalio import DigitalInOut, Direction, Pull
from adafruit_seesaw.seesaw import Seesaw
from adafruit_seesaw.analoginput import AnalogInput
from adafruit_seesaw.pwmout import PWMOut
from adafruit_motor import motor
from busio import I2C
import neopixel
import audioio
import board
import time
 
# Create seesaw object
i2c = I2C(board.SCL, board.SDA)
seesaw = Seesaw(i2c)
 
# built in CPX button A
button = DigitalInOut(board.BUTTON_A)
button.direction = Direction.INPUT
button.pull = Pull.DOWN
 
# NeoPixels
pixels = neopixel.NeoPixel(board.A1, 10, brightness=0)
pixels.fill((0,0,250))
 
# Analog reading from Signal #1 (ss. #2)
foot_pedal = AnalogInput(seesaw, 2)
 
# Create one motor on seesaw PWM pins 22 & 23
motor_a = motor.DCMotor(PWMOut(seesaw, 22), PWMOut(seesaw, 23))
motor_a.throttle = 0
 
def map_range(x, in_min, in_max, out_min, out_max):
    # Maps a number from one range to another.
    mapped = (x-in_min) * (out_max - out_min) / (in_max-in_min) + out_min
    if out_min <= out_max:
        return max(min(mapped, out_max), out_min)
    return min(max(mapped, out_max), out_min)
 
# Get the audio file ready
wavfile = "unchained.wav"
f = open(wavfile, "rb")
wav = audioio.WaveFile(f)
a = audioio.AudioOut(board.A0)
 
time_to_play = 0  # when to start playing
played = False  # have we played audio already? only play once!
 
while True:
    # Foot pedal ranges from about 700 (unpressed) to 50 (pressed)
    # make that change the speed of the motor from 0 (stopped) to 0.5 (half)
    press = foot_pedal.value
    speed = map_range(press, 700, 50, 0, 0.5)
    print("%d -> %0.3f" % (press, speed))
    motor_a.throttle = speed
 
    if not time_to_play and speed > 0.1:
        print("Start audio in 3 seconds")
        time_to_play = time.monotonic() + 3
    elif time_to_play and time.monotonic() > time_to_play and not played:
        print("Playing audio")
        a.play(wav)
        played = True
 
    # turn on/off blue LEDs
    if button.value:
        if pixels.brightness < 0.1:
            pixels.brightness = 1
        else:
            pixels.brightness = 0
        time.sleep(0.5)
 
    # loop delay
    time.sleep(0.1)


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