Raspberry Pi Pico Wで簡単IoT：温度を3分ごとにWordPressへ自動送信

import network
import urequests
import machine
import time
import ntptime

# ====== Wi-Fi設定 ======
SSID = "あなたのWi-Fi SSID"
PASSWORD = "あなたのWi-Fiパスワード"

# ====== 送信先URL（温度 + 日時付き）&　認証 ======
POST_URL = "https://yourdomain.com/?pico_temp={}&datetime={}&token=your_secure_token"

# ====== 温度を取得 ======
def read_temp():
    sensor_temp = machine.ADC(4)
    conversion_factor = 3.3 / 65535
    reading = sensor_temp.read_u16() * conversion_factor
    temperature = 27 - (reading - 0.706) / 0.001721
    return round(temperature, 1)

# ====== 時刻同期（NTP） ======
def sync_time():
    try:
        ntptime.settime()
        print("時刻同期成功")
    except:
        print("時刻同期失敗")

# ====== 現在の日時を文字列で取得（UTC→JST補正） ======
def get_datetime():
    t = time.localtime(time.time() + 9 * 3600)  # JST = UTC+9
    return "{:04}-{:02}-{:02}T{:02}:{:02}".format(t[0], t[1], t[2], t[3], t[4])

# ====== Wi-Fi接続 ======
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(SSID, PASSWORD)
    for _ in range(10):
        if wlan.isconnected():
            print("接続成功:", wlan.ifconfig())
            return True
        time.sleep(1)
    print("Wi-Fi接続失敗")
    return False

# ====== メインループ ======
def main():
    if not connect_wifi():
        return
    sync_time()

    while True:
        temp = read_temp()
        dt = get_datetime()
        url = POST_URL.format(temp, dt)
        print(f"[{dt}] 送信: {url}")
        try:
            res = urequests.get(url)
            print("応答:", res.text)
            res.close()
        except Exception as e:
            print("送信失敗:", e)
        time.sleep(180)  # 3分ごと

main()

<?php
/*
Plugin Name: Pico Temperature Receiver
Description: Raspberry Pi Pico W から送られた温度を受信し表示するプラグイン
Version: 1.0
Author: Nitta Takanori
*/

add_action('init', function () {
    if (isset($_GET['pico_temp'], $_GET['token']) && $_GET['token'] === '1017') {
        $temp = floatval($_GET['pico_temp']);
        update_option('pico_current_temp', $temp);

        if (isset($_GET['datetime'])) {
            update_option('pico_temp_time', sanitize_text_field($_GET['datetime']));
        }

        echo 'OK';
        exit;
    }
});

add_shortcode('pico_temp', function () {
    $temp = get_option('pico_current_temp', 'データ未取得');
    $time = get_option('pico_temp_time', '時刻不明');
    return "現在のPico温度: " . esc_html($temp) . " ℃（" . esc_html($time) . "）";
});