Engineering Concepts

# Simple code to read a message from the Dabble App over the DSDTech HM-10 bluetooth module

# Author: Eric Z. Ayers <ericzundel@gmail.com>

"""CircuitPython Example of how to read data from the Dabble app"""

import binascii

import busio

import digitalio

import time

import board

import pwmio

from adafruit_motor import servo

from dabble import Dabble

from rainbowio import colorwheel

import neopixel

# create a PWMOut object on Pin A2.

pwm = pwmio.PWMOut(board.GP22, duty_cycle=2 ** 15, frequency=50)

pwm1 = pwmio.PWMOut(board.GP3, duty_cycle=2 ** 15, frequency=50)

pixel_pin = board.GP2

dabble = Dabble(board.GP0, board.GP1, debug=True)

num_pixels = 10

# Create a servo & neopixel as variables.

my_servoright = servo.Servo(pwm)

my_servoleft = servo.Servo(pwm1)

pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.3, auto_write=False)

# Create colors for the neopixel as variables.

RED    = (255,   0,   0) # 100% red,   0% green, 0% blue

GREEN  = (  0, 255,   0) #   0% red, 100% green, 0% blue

BLUE   = (  0,   0, 255) # 100% blue

CYAN   = (  0, 255, 255) #   0% red, 100% green, 100% blue

YELLOW = (255, 150,   0) # 100% red,  55% green, 0% blue

WHITE  = (100, 100, 100) # 100% of all colors

BLACK  = (  0,   0,   0) # 0% of all colors (turns the LED off)

# Create functions for your servos & neopixels

def forward():

    my_servoright.angle = 0

    my_servoleft.angle = 180

def backward():

    my_servoright.angle = 180

    my_servoleft.angle = 0

def right():

    my_servoright.angle = 180

    my_servoleft.angle = 180

def left():

    my_servoright.angle = 0

    my_servoleft.angle = 0

def stop():

    my_servoright.angle = 90

    my_servoleft.angle = 90

def theater_chase2(color1, color2, wait):

  for j in range(10): #do 10 cycles of chasing

    for q in range(3):

      for i in range(0, len(pixels)-1, 3):

        pixels[i+q] = color1

        pixels[i+q+1] = color2

      pixels.show()

      time.sleep(wait);

      for i in range(0, len(pixels)-1, 3):

        pixels[i+q] = BLACK        

# Commands for code 

while True:

    message = dabble.read_message()

    if (message != None):

        print("Message: " + str(message))

        # Implement tank steering on a 2 wheeled robot & control the color & pattern of the neopixel

        if (message.up_arrow_pressed):

            forward()

            pixels.fill(BLUE)

            pixels.show()

            print("Move both motors forward")

        elif (message.down_arrow_pressed):

            backward()

            pixels.fill(RED)

            pixels.show()

            print("Move both motors backward")

        elif (message.right_arrow_pressed):

            right()

            pixels.fill(GREEN)

            pixels.show()

            print("Move left motor forward and right motor backward")

        elif (message.left_arrow_pressed):

            left()

            pixels.fill(GREEN)

            pixels.show()

            print("Move left motor backward and right motor forward")

        elif (message.no_direction_pressed):

            stop()

            pixels.fill(WHITE)

            pixels.show()

            print("Stop both motors")

        else:

            print("Something crazy happened with direction!")

        if (message.triangle_pressed):

            print("Theater Chase")

            theater_chase2(BLUE, RED, 0.15)

            pixels.show()

        elif (message.circle_pressed):

            print("No action")

        elif (message.square_pressed):

            print("No action")

        elif (message.circle_pressed):

            print("No action")

        elif (message.start_pressed):

            print("No action")

        elif (message.select_pressed):

            print("No action")

        elif (message.no_action_pressed):

            print("No action")

        else:

            print("Something crazy happened with action!")