Pico W IoT Door Sensor (Reed Switch)

1// ─────────────────────────────────────────
2//   BlueGrays · bluegrays.com
3//   Pico W IoT Door Sensor (Reed Switch)
4// ─────────────────────────────────────────
5// The "Door / window" IoT template from the BlueGrays app: see on your
6// phone whether a door or window is open or closed, with a reed switch and
7// a magnet. Ohmi prepares the real code in the app with your own device
8// key (Workshop › Devices › Add a device); the code here is an example,
9// the device key and Wi-Fi details are placeholders. Board package:
10// Raspberry Pi Pico (Earle Philhower). Library Manager: BlueGraysIoT (with
11// its dependencies). The board only joins 2.4 GHz Wi-Fi networks. With the
12// magnet close, the reed closes and the door counts as closed.
13//
14// Pins:
15//   GP14 -> One leg of the reed switch
16//   GND -> Other leg of the reed switch
17//   ESP32: reed GPIO27
18
19/*
20 * Door / window · BlueGrays IoT
21 * BlueGrays · bluegrays.com
22 * Do not share this code: it contains your device key and Wi-Fi password.
23 */
24
25#include <BlueGraysIoT.h>
26
27const char *DEVICE_KEY = "YOUR_DEVICE_KEY";
28const char *WIFI_NAME = "YOUR_WIFI_NAME";
29const char *WIFI_PASSWORD = "YOUR_WIFI_PASSWORD";
30
31BlueGraysIoT bg(DEVICE_KEY);
32
33const int REED_PIN = 14;
34bool lastRaw = false, stableOpen = false;
35unsigned long changedAtMs = 0;
36
37void setup() {
38  Serial.begin(115200);
39  pinMode(REED_PIN, INPUT_PULLUP);
40  bg.setDebug(Serial);
41  bg.setLanguage(BG_LANG_EN);
42  bg.begin(WIFI_NAME, WIFI_PASSWORD);
43}
44
45void loop() {
46  bg.loop();  // avoid long delay() calls here
47  bool raw = digitalRead(REED_PIN) == HIGH;
48  if (raw != lastRaw) { lastRaw = raw; changedAtMs = millis(); }
49  if (millis() - changedAtMs > 50) stableOpen = raw;
50  bg.send("kapi", stableOpen ? "acik" : "kapali");
51}
52