initial commit

volume_indicator.ino

@@ -0,0 +1,62 @@
+#include <Adafruit_CircuitPlayground.h>
+#include <Adafruit_Circuit_Playground.h>
+
+uint8_t levels[5][2] = {
+  { 4, 5 },
+  { 3, 6 },
+  { 2, 7 },
+  { 1, 8 },
+  { 0, 9 },
+};
+
+#define COLOR_MAX 0xFF0000
+#define COLOR_MID 0xFFFF00
+#define COLOR_LOW 0x00FF00
+
+#define MAX_LOUD 50
+
+
+void setup() {
+  CircuitPlayground.begin();
+  CircuitPlayground.setBrightness(1);
+}
+
+void loop() {
+  float value = CircuitPlayground.mic.soundPressureLevel(10) - 50;
+  float level_size = MAX_LOUD / 6;
+  if (value < level_size) {
+    CircuitPlayground.clearPixels();
+  } else {
+    for (int p = 2; p <= 6; p++) {
+      if (value < level_size * p) {
+        lights(p - 1);
+        break;
+      }
+    }
+  }
+
+  delay(90);
+}
+
+void lights(int i) {
+  float color = 0xFFFFFF;
+
+  if (i == 5) {
+    color = COLOR_MAX;
+  } else if (i > 2) {
+    color = COLOR_MID;
+  } else {
+    color = COLOR_LOW;
+  }
+
+  for (int p = 0; p <= 5; p++) {
+    if (p < i) {
+      CircuitPlayground.setPixelColor(levels[p][0], color);
+      CircuitPlayground.setPixelColor(levels[p][1], color);
+    } else {
+      CircuitPlayground.setPixelColor(levels[p][0], 0x000000);
+      CircuitPlayground.setPixelColor(levels[p][1], 0x000000);
+    }
+
+  }
+}