Create Balls-n-Noise_DualCore

micropython/examples/pico_explorer/Balls-n-Noise_DualCore

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+This example combines balls_demo.py and noise.py by using both cores and reading a potentiometer input to change the speed of the display and song
+# We're creating 100 balls with their own individual colour and 1 BG colour
+# for a total of 101 colours, which will all fit in the custom 256 entry palette!
+
+# This example shows you how you can use Pico Explorer's onboard buzzer as a speaker to play different notes and string them together into a bleepy tune.
+# It uses code written by Avram Piltch - check out his Tom's Hardware article! https://www.tomshardware.com/uk/how-to/buzzer-music-raspberry-pi-pico
+# You'll need to connect a jumper wire between GPO and AUDIO on the Explorer Base to hear noise.
+
+# Create a buzzer on pin 0
+# Don't forget to wire GP0 to AUDIO!
+
+# Analogue Dial on a Pimoroni Pico Explorer with Pico Graphics
+# 10 K Ohm potentiometer center wiper connection on ADC(0) = GP26 
+# Don't forget to wire 3V3 and GND to the potentiometer limit connections
+
+import time
+import random
+from picographics import PicoGraphics, DISPLAY_PICO_EXPLORER, PEN_P8
+from pimoroni import Buzzer
+import machine
+import _thread
+from time import sleep
+
+display = PicoGraphics(display=DISPLAY_PICO_EXPLORER, pen_type=PEN_P8)
+display.set_backlight(1.0)
+
+WIDTH, HEIGHT = display.get_bounds()
+
+potentiometer = machine.ADC(26) # Install potentiometer
+
+class Ball:
+    def __init__(self, x, y, r, dx, dy, pen):
+        self.x = x
+        self.y = y
+        self.r = r
+        self.dx = dx
+        self.dy = dy
+        self.pen = pen
+
+
+# initialise shapes
+balls = []
+for i in range(0, 100):
+    r = random.randint(0, 10) + 3
+    balls.append(
+        Ball(
+            random.randint(r, r + (WIDTH - 2 * r)),
+            random.randint(r, r + (HEIGHT - 2 * r)),
+            r,
+            (14 - r) / 2,
+            (14 - r) / 2,
+            display.create_pen(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)),
+        )
+    )
+
+BG = display.create_pen(40, 40, 40)
+
+BUZZER = Buzzer(0)
+
+BLACK = display.create_pen(0, 0, 0)
+GREEN = display.create_pen(0, 255, 0)
+
+# this handy list converts notes into frequencies, which you can use with the explorer.set_tone function
+tones = {
+    "B0": 31,
+    "C1": 33,
+    "CS1": 35,
+    "D1": 37,
+    "DS1": 39,
+    "E1": 41,
+    "F1": 44,
+    "FS1": 46,
+    "G1": 49,
+    "GS1": 52,
+    "A1": 55,
+    "AS1": 58,
+    "B1": 62,
+    "C2": 65,
+    "CS2": 69,
+    "D2": 73,
+    "DS2": 78,
+    "E2": 82,
+    "F2": 87,
+    "FS2": 93,
+    "G2": 98,
+    "GS2": 104,
+    "A2": 110,
+    "AS2": 117,
+    "B2": 123,
+    "C3": 131,
+    "CS3": 139,
+    "D3": 147,
+    "DS3": 156,
+    "E3": 165,
+    "F3": 175,
+    "FS3": 185,
+    "G3": 196,
+    "GS3": 208,
+    "A3": 220,
+    "AS3": 233,
+    "B3": 247,
+    "C4": 262,
+    "CS4": 277,
+    "D4": 294,
+    "DS4": 311,
+    "E4": 330,
+    "F4": 349,
+    "FS4": 370,
+    "G4": 392,
+    "GS4": 415,
+    "A4": 440,
+    "AS4": 466,
+    "B4": 494,
+    "C5": 523,
+    "CS5": 554,
+    "D5": 587,
+    "DS5": 622,
+    "E5": 659,
+    "F5": 698,
+    "FS5": 740,
+    "G5": 784,
+    "GS5": 831,
+    "A5": 880,
+    "AS5": 932,
+    "B5": 988,
+    "C6": 1047,
+    "CS6": 1109,
+    "D6": 1175,
+    "DS6": 1245,
+    "E6": 1319,
+    "F6": 1397,
+    "FS6": 1480,
+    "G6": 1568,
+    "GS6": 1661,
+    "A6": 1760,
+    "AS6": 1865,
+    "B6": 1976,
+    "C7": 2093,
+    "CS7": 2217,
+    "D7": 2349,
+    "DS7": 2489,
+    "E7": 2637,
+    "F7": 2794,
+    "FS7": 2960,
+    "G7": 3136,
+    "GS7": 3322,
+    "A7": 3520,
+    "AS7": 3729,
+    "B7": 3951,
+    "C8": 4186,
+    "CS8": 4435,
+    "D8": 4699,
+    "DS8": 4978
+}
+
+# put the notes for your song in here!
+song = ["AS6", "A6", "AS6", "P", "AS5", "P", "AS5", "P", "F6", "DS6", "D6", "F6", "AS6", "A6", "AS6", "D7", "C7", "AS6", "C7", "P", "C6", "P", "C6", "P", "C6", "AS5", "A5", "C6", "F6", "P", "F6", "P", "G6", "A6", "AS6", "A6", "G6", "F6", "G6", "F6", "DS6", "D6", "DS6", "D6", "C6", "AS5", "AS5", "A5", "G5", "F5", "G5", "AS5", "A5", "C6", "AS5", "D6", "C6", "DS6", "D6", "P", "AS5", "P", "AS5"]
+
+def clear():                        # this function clears Pico Explorer's screen to black
+    display.set_pen(BLACK)
+    display.clear()
+    display.update()
+
+
+def playtone(frequency):            # this function tells your program how to make noise
+    BUZZER.set_tone(frequency)
+
+
+def bequiet():                      # this function tells your program how not to make noise
+    BUZZER.set_tone(-1)
+
+
+def playsong(song):                 # this function plays your song
+    a = 0                           # this variable keeps track of the visualiser bars
+    for i in range(len(song)):
+        pot = potentiometer.read_u16()/256
+        pot = int(pot * 256.0 /255.0) - 1
+        pot = int(pot *100 / 255)
+        if pot > 100:
+            pot = 100
+        if pot < 1:
+            pot = 1
+
+        pausetime = 0.1 + pot * 0.002
+
+        if (song[i] == "P"):
+            bequiet()
+        else:
+            playtone(tones[song[i]])
+            a += 7
+        if a >= 240:  # clears the screen if the green bars reach the right hand edge
+            clear()
+            a = 0
+        time.sleep(pausetime)  # change this number if you want to alter how long the notes play for
+    bequiet()
+
+sLock = _thread.allocate_lock()
+
+def Core0Task():
+    while True:
+        display.set_pen(BG)
+        display.clear()
+
+        pot = potentiometer.read_u16()/256
+        pot = int(pot * 256.0 /255.0) - 1
+        pot = int(pot *100 / 255)
+        if pot > 100:
+            pot = 100
+        if pot < 1:
+            pot = 1
+
+        pausetime = 0.001 * pot
+
+        for ball in balls:
+            ball.x += ball.dx
+            ball.y += ball.dy
+
+            xmax = WIDTH - ball.r
+            xmin = ball.r
+            ymax = HEIGHT - ball.r
+            ymin = ball.r
+
+            if ball.x < xmin or ball.x > xmax:
+                ball.dx *= -1
+
+            if ball.y < ymin or ball.y > ymax:
+                ball.dy *= -1
+
+            display.set_pen(ball.pen)
+            display.circle(int(ball.x), int(ball.y), int(ball.r))
+
+        display.set_pen(250)
+        display.set_font("bitmap8")
+        display.text(str(int(100-pot+1))+"%",5,5,scale=5)
+
+        display.update()
+        time.sleep(pausetime)
+
+def Core1Task():
+    while True:
+        playsong(song)
+
+_thread.start_new_thread(Core1Task, ())
+
+Core0Task()