A little robotic surprise for the quarterly, written in CircuitPython

settings.toml

CIRCUITPY_BLE_NAME="WhatsInTheBox?"

whats_in_the_box.py

import time
import board
import adafruit_ticks

from adafruit_motorkit import MotorKit

from neopixel import NeoPixel
from rainbowio import colorwheel

from adafruit_ble import BLERadio
from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
from adafruit_ble.services.nordic import UARTService

pixels = NeoPixel(board.NEOPIXEL, 1, brightness=0.1)
pixels.fill(colorwheel(24))

kit = MotorKit()

ble = BLERadio()
# ble.name = "WhatsInTheBox" # Config'ed in settings.toml

uart = UARTService()

advertisement = ProvideServicesAdvertisement(uart)

def pulse(motor, throttle = 1.0, interval = 0.25, pause=None, count = 5):
	for _ in range(count):
		motor.throttle = throttle
		time.sleep(interval)
		if pause:
			motor.throttle=None
			time.sleep(pause)
		motor.throttle = -(throttle)
		time.sleep(interval)
		if pause:
			motor.throttle=None
			time.sleep(pause)
	motor.throttle = None

def send_message(msg):
	uart.write(msg.encode("utf-8"))

while True:
	print("Advertising BLE services")
	ble.start_advertising(advertisement)
	while not ble.connected:
		pass

	ble.stop_advertising()
	print("BLE connected")

	while ble.connected:
		send_message("pulsing m1")
		pulse(kit.motor1)
		send_message("pulsing_m2")
		pulse(kit.motor2, interval=1.5, pause=0.5)
	
	kit.motor1.throttle = None
	kit.motor1.throttle = None

	print("BLE disconnected")