sparkle motion examples

Author: FoamyGuy

Sparkle_Motion_Examples/Arduino_I2S_SparkleMotion/.feather_esp32_v2.test.only

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+// SPDX-FileCopyrightText: 2025 Limor Fried for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include <Arduino.h>
+#include "ESP_I2S.h"
+
+// I2S pin definitions for Sparklemotion
+const uint8_t I2S_SCK = 26;  // BCLK
+const uint8_t I2S_WS = 33;   // LRCLK
+const uint8_t I2S_DIN = 25;  // DATA_IN
+
+// Create I2S instance
+I2SClass i2s;
+
+void setup() {
+  // Fast serial for plotting
+  Serial.begin(500000);
+  
+  // Initialize I2S
+  i2s.setPins(I2S_SCK, I2S_WS, -1, I2S_DIN);
+  if (!i2s.begin(I2S_MODE_STD, 44100, I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_MONO, I2S_STD_SLOT_LEFT)) {
+    Serial.println("Failed to initialize I2S bus!");
+    return;
+  }
+
+  Serial.println("I2S Mic Plotter Ready");
+}
+
+void loop() {
+  static uint32_t lastPlot = 0;
+  
+  // Get a sample
+  int32_t sample = i2s.read();
+  
+  // Only plot every 1ms (1000 samples/sec is plenty for visualization)
+  if (millis() - lastPlot >= 1) {
+    if (sample >= 0) {  // Valid sample
+      // Plot both raw and absolute values
+      Serial.printf("%d,%d\n", (int16_t)sample, abs((int16_t)sample));
+    }
+    lastPlot = millis();
+  }
+}

Sparkle_Motion_Examples/Arduino_I2S_SparkleMotion/Arduino_I2S_SparkleMotion.ino

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+// SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include <Adafruit_NeoPixel.h>
+
+#define BLOCK_1 21
+#define BLOCK_2 22
+#define NUM_PIXELS 8
+
+Adafruit_NeoPixel STRIP_1(NUM_PIXELS, BLOCK_1, NEO_GRB + NEO_KHZ800);
+Adafruit_NeoPixel STRIP_2(NUM_PIXELS, BLOCK_2, NEO_GRB + NEO_KHZ800);
+
+void setup() {
+  STRIP_1.begin();
+  STRIP_2.begin();
+  STRIP_1.setBrightness(25);
+  STRIP_2.setBrightness(50);
+}
+
+uint16_t pixelHue_1 = 0;
+uint16_t pixelHue_2 = 256;
+
+void loop() {  
+  pixelHue_1 += 256;
+  for(int i=0; i<STRIP_1.numPixels(); i++) {
+      int hue_1 = pixelHue_1 + (i * 65536L / STRIP_1.numPixels());
+      STRIP_1.setPixelColor(i, STRIP_1.gamma32(STRIP_1.ColorHSV(hue_1)));
+    }
+  STRIP_1.show();
+
+  pixelHue_2 -= 256;
+  for(int i=STRIP_2.numPixels(); i>-1; i--) {
+      int hue_2 = pixelHue_2 + (i * 65536L / STRIP_2.numPixels());
+      STRIP_2.setPixelColor(i, STRIP_2.gamma32(STRIP_2.ColorHSV(hue_2)));
+    }
+  STRIP_2.show();
+  
+  delay(10);
+
+}

Sparkle_Motion_Examples/Arduino_Sparkle_Motion_Multi_NeoPixels/Arduino_Sparkle_Motion_Multi_NeoPixels.ino

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+# SPDX-FileCopyrightText: 2025 Tim Cocks for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+"""
+Example illustrating two different LED Animations running on
+Neopixels connected to 2 of the main outputs of the Sparkle Motion
+"""
+import board
+import neopixel
+
+from adafruit_led_animation.animation.comet import Comet
+from adafruit_led_animation.animation.rainbow import Rainbow
+from adafruit_led_animation.color import GREEN
+
+strip1_pixel_pin = board.D21
+strip2_pixel_pin = board.D22
+
+pixel_count = 8
+
+strip1_pixels = neopixel.NeoPixel(
+    strip1_pixel_pin, pixel_count, brightness=0.1, auto_write=False
+)
+strip2_pixels = neopixel.NeoPixel(
+    strip2_pixel_pin, pixel_count, brightness=0.1, auto_write=False
+)
+
+comet = Comet(strip1_pixels, speed=0.05, color=GREEN, tail_length=3, bounce=True)
+rainbow = Rainbow(strip2_pixels, speed=0.05, period=3)
+
+while True:
+    comet.animate()
+    rainbow.animate()