ESP32 IoT RGB LED Strip (WS2812B)

1// ─────────────────────────────────────────
2//   BlueGrays · bluegrays.com
3//   ESP32 IoT RGB LED Strip (WS2812B)
4// ─────────────────────────────────────────
5// The "RGB LED strip" IoT template from the BlueGrays app: change the
6// light, color, brightness and effect (solid, rainbow, breathe, blink) of
7// a 30-LED WS2812B strip from your phone. Ohmi prepares the real code in
8// the app with your own device key (Workshop › Devices › Add a device);
9// the code here is an example, the device key and Wi-Fi details are
10// placeholders. Library Manager: BlueGraysIoT (with its dependencies) and
11// Adafruit NeoPixel. The board only joins 2.4 GHz Wi-Fi networks. For 30
12// LEDs at full brightness, power the strip from a separate 5 V 2 A adapter
13// and join the grounds.
14//
15// Pins:
16//   GPIO13 -> WS2812B strip DIN
17//   5V, GND -> Strip 5V, GND
18//   Pico W: strip DIN GP2, 5V VBUS
19
20/*
21 * RGB LED strip · BlueGrays IoT
22 * BlueGrays · bluegrays.com
23 * Do not share this code: it contains your device key and Wi-Fi password.
24 */
25
26#include <BlueGraysIoT.h>
27#include <Adafruit_NeoPixel.h>  // Library Manager: 'Adafruit NeoPixel'
28
29const char *DEVICE_KEY = "YOUR_DEVICE_KEY";
30const char *WIFI_NAME = "YOUR_WIFI_NAME";
31const char *WIFI_PASSWORD = "YOUR_WIFI_PASSWORD";
32
33BlueGraysIoT bg(DEVICE_KEY);
34
35const int LED_COUNT = 30;
36Adafruit_NeoPixel strip(LED_COUNT, 13, NEO_GRB + NEO_KHZ800);
37bool isOn = false; uint8_t cr = 255, cg = 255, cb = 255; int brightness = 70; String effect = "sabit";
38void paint() {
39  strip.setBrightness(isOn ? map(brightness, 0, 100, 0, 255) : 0);
40  for (int i = 0; i < LED_COUNT; i++) strip.setPixelColor(i, strip.Color(cr, cg, cb));
41  strip.show();
42}
43
44void setup() {
45  Serial.begin(115200);
46  strip.begin();
47  paint();
48  bg.onSwitch("acik", [](bool on) { isOn = on; paint(); });
49  bg.onColor("renk", [](uint8_t r, uint8_t g, uint8_t b) { cr = r; cg = g; cb = b; paint(); });
50  bg.onNumber("parlaklik", [](float v) { brightness = (int)v; paint(); });
51  bg.onChoice("efekt", [](const char *e) { effect = e; paint(); });
52  bg.setDebug(Serial);
53  bg.setLanguage(BG_LANG_EN);
54  bg.begin(WIFI_NAME, WIFI_PASSWORD);
55}
56
57void loop() {
58  bg.loop();  // avoid long delay() calls here
59  if (isOn && effect == "gokkusagi") {
60    static uint16_t hue = 0; hue += 64;
61    for (int i = 0; i < LED_COUNT; i++) strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(hue + i * 2000)));
62    strip.show(); delay(5);
63  } else if (isOn && effect == "nefes") {  // slowly fades out and in
64    float wave = (sin(millis() / 600.0) + 1.0) / 2.0;
65    strip.setBrightness((uint8_t)(map(brightness, 0, 100, 0, 255) * (0.15 + 0.85 * wave)));
66    strip.show(); delay(10);
67  } else if (isOn && effect == "yanip_sonme") {  // blinks every half second
68    strip.setBrightness((millis() / 500) % 2 ? map(brightness, 0, 100, 0, 255) : 0);
69    strip.show(); delay(10);
70  }
71}
72