ESP32 IoT Curtain Opener (SG90 Servo)

1// ─────────────────────────────────────────
2//   BlueGrays · bluegrays.com
3//   ESP32 IoT Curtain Opener (SG90 Servo)
4// ─────────────────────────────────────────
5// The "Servo curtain" IoT template from the BlueGrays app: the Curtain
6// angle setting in the app (+ and − buttons) turns the SG90 servo to any
7// angle between 0 and 180 degrees, so you can open and close a model
8// curtain, a blind's tilt rod or a small lid from your phone. Ohmi
9// prepares the real code in the app with your own device key (Workshop ›
10// Devices › Add a device); the code here is an example, the device key and
11// Wi-Fi details are placeholders. Library Manager: BlueGraysIoT (with its
12// dependencies) and ESP32Servo. The board only joins 2.4 GHz Wi-Fi
13// networks. The SG90 is a small servo; a real curtain needs a stronger
14// servo with its own 5 V supply, and keep your fingers away from the
15// moving arm.
16//
17// Pins:
18//   GPIO18 -> Servo signal (orange)
19//   5V, GND -> Servo V+ (red), GND (brown)
20//   Pico W: servo signal GP17
21
22/*
23 * Servo curtain · BlueGrays IoT
24 * BlueGrays · bluegrays.com
25 * Do not share this code: it contains your device key and Wi-Fi password.
26 */
27
28#include <BlueGraysIoT.h>
29#include <ESP32Servo.h>  // Library Manager: 'ESP32Servo'
30
31const char *DEVICE_KEY = "YOUR_DEVICE_KEY";
32const char *WIFI_NAME = "YOUR_WIFI_NAME";
33const char *WIFI_PASSWORD = "YOUR_WIFI_PASSWORD";
34
35BlueGraysIoT bg(DEVICE_KEY);
36
37const int SERVO_PIN = 18;
38Servo servo;
39
40void setup() {
41  Serial.begin(115200);
42  servo.attach(SERVO_PIN);
43  bg.onNumber("aci", [](float v) { servo.write((int)v); });
44  bg.setDebug(Serial);
45  bg.setLanguage(BG_LANG_EN);
46  bg.begin(WIFI_NAME, WIFI_PASSWORD);
47}
48
49void loop() {
50  bg.loop();  // avoid long delay() calls here
51}
52