Pico W IoT Temperature and Humidity (DHT22)

1// ─────────────────────────────────────────
2//   BlueGrays · bluegrays.com
3//   Pico W IoT Temperature and Humidity (DHT22)
4// ─────────────────────────────────────────
5// The "Temperature and humidity" IoT template from the BlueGrays app: the
6// DHT22 sends the room temperature and humidity to the app every 2
7// seconds, and the values build up in a chart. Ohmi prepares the real code
8// in 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. Board package: Raspberry Pi Pico (Earle Philhower).
11// Library Manager: BlueGraysIoT (with its dependencies). The board only
12// joins 2.4 GHz Wi-Fi networks.
13//
14// Pins:
15//   GP16 -> DHT22 OUT (data)
16//   3V3, GND -> DHT22 VCC, GND
17//   ESP32: DHT22 OUT GPIO4
18
19/*
20 * Temperature and humidity · 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#include <DHT.h>
27
28const char *DEVICE_KEY = "YOUR_DEVICE_KEY";
29const char *WIFI_NAME = "YOUR_WIFI_NAME";
30const char *WIFI_PASSWORD = "YOUR_WIFI_PASSWORD";
31
32BlueGraysIoT bg(DEVICE_KEY);
33
34DHT dht(16, DHT22);
35unsigned long lastReadMs = 0;
36
37void setup() {
38  Serial.begin(115200);
39  dht.begin();
40  bg.setDeadband("sicaklik", 0.1);
41  bg.setDeadband("nem", 1.0);
42  bg.setDebug(Serial);
43  bg.setLanguage(BG_LANG_EN);
44  bg.begin(WIFI_NAME, WIFI_PASSWORD);
45}
46
47void loop() {
48  bg.loop();  // avoid long delay() calls here
49  if (millis() - lastReadMs >= 2000) {
50    lastReadMs = millis();
51    bg.send("sicaklik", dht.readTemperature());
52    bg.send("nem", dht.readHumidity());
53  }
54}
55