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Code
This simple robot doesn't do a lot but it does it very well!
We have one DC motor with a fan attachment, and one servo motor where we connect the bubble wand. Every few seconds, the wand goes down into the bubble mix, then back up, the fan turns on for 3 seconds, then turns off and the process repeats!
# SPDX-FileCopyrightText: 2018 Limor Fried for Adafruit Industries
#
# SPDX-License-Identifier: MIT
# CircuitPython 3.0 CRICKIT demo
import time
import board
from adafruit_motor import servo, motor
from adafruit_seesaw.pwmout import PWMOut
from adafruit_seesaw.seesaw import Seesaw
from busio import I2C
i2c = I2C(board.SCL, board.SDA)
ss = Seesaw(i2c)
print("Bubble machine!")
SERVOS = True
DCMOTORS = True
# Create 4 Servos
servos = []
if SERVOS:
for ss_pin in (17, 16, 15, 14):
pwm = PWMOut(ss, ss_pin)
pwm.frequency = 50
_servo = servo.Servo(pwm)
_servo.angle = 90 # starting angle, middle
servos.append(_servo)
# Create 2 DC motors
motors = []
if DCMOTORS:
for ss_pin in ((18, 19), (22, 23)):
pwm0 = PWMOut(ss, ss_pin[0])
pwm1 = PWMOut(ss, ss_pin[1])
_motor = motor.DCMotor(pwm0, pwm1)
motors.append(_motor)
while True:
print("servo down")
servos[0].angle = 180
time.sleep(1)
print("fan on")
motors[0].throttle = 1
time.sleep(3)
print("fan off")
time.sleep(1)
motors[0].throttle = 0
print("servo up")
servos[0].angle = 0
time.sleep(1)
