Raspberry Pi Pico Wで作る熱中症警戒アラート表示器

from machine import Pin, I2C
import ssd1306

# I2C接続確認(配線ミス時はここで空リストが出ます)
i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=400000)
print("I2Cデバイス検出:", i2c.scan())  # 通常 [60] (0x3C) が出れば正常

oled = ssd1306.SSD1306_I2C(128, 64, i2c)
oled.fill(0)
oled.text("Hello, Pico W!", 0, 0)
oled.text("OLED Test OK", 0, 20)
oled.show()

from machine import Pin
import dht
import time

sensor = dht.DHT11(Pin(16))

while True:
    try:
        sensor.measure()
        temp = sensor.temperature()
        hum = sensor.humidity()
        print("温度: {}C  湿度: {}%".format(temp, hum))
    except OSError as e:
        print("センサー読み取りエラー:", e)
    time.sleep(2)

def estimate_wbgt(temp, humidity):
    # Tetensの式で水蒸気圧(hPa)を算出
    e = (humidity / 100) * 6.1078 * 10 ** (7.5 * temp / (temp + 237.3))
    # 屋内(日射なし)簡易WBGT推定式
    return 0.567 * temp + 0.393 * e + 3.94

def classify_wbgt(wbgt):
    if wbgt < 21:
        return "ほぼ安全"
    elif wbgt < 25:
        return "注意"
    elif wbgt < 28:
        return "警戒"
    elif wbgt < 31:
        return "厳重警戒"
    else:
        return "危険"

def draw_face(oled, mood):
    # mood: 2=ほぼ安全(にっこり) 〜 -2=危険(困り顔)
    cx, cy = 64, 34
    eye_y = cy - 8
    # 目
    oled.fill_rect(cx - 14, eye_y, 4, 4, 1)
    oled.fill_rect(cx + 10, eye_y, 4, 4, 1)
    # 眉(厳重警戒・危険のみハの字に)
    if mood <= -1:
        oled.line(cx - 17, eye_y - 4, cx - 10, eye_y - 1, 1)
        oled.line(cx + 17, eye_y - 4, cx + 10, eye_y - 1, 1)
    # 口(2次曲線。mood>0で笑顔、mood<0でしかめ顔)
    mouth_w = 20
    mouth_y = cy + 10
    amplitude = 6
    for dx in range(-mouth_w, mouth_w + 1):
        dy = mood * amplitude * (1 - (dx / mouth_w) ** 2)
        oled.pixel(cx + dx, int(mouth_y + dy), 1)
    # 危険レベルは汗マーク追加
    if mood <= -2:
        oled.line(cx + 22, eye_y - 6, cx + 20, eye_y + 2, 1)
        oled.line(cx + 20, eye_y + 2, cx + 24, eye_y + 2, 1)

from machine import Pin, I2C
import dht
import ssd1306
import time

# I2C・DHT11初期化
i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=400000)
oled = ssd1306.SSD1306_I2C(128, 64, i2c)
sensor = dht.DHT11(Pin(16))

# しきい値(WBGT上限, mood, 表示ラベル)
LEVELS = [
    (21,  2,  "SAFE"),
    (25,  1,  "CAUTION"),
    (28,  0,  "WARNING"),
    (31, -1,  "SEVERE"),
    (999, -2, "DANGER"),
]

def estimate_wbgt(temp, humidity):
    e = (humidity / 100) * 6.1078 * 10 ** (7.5 * temp / (temp + 237.3))
    return 0.567 * temp + 0.393 * e + 3.94

def classify(wbgt):
    for threshold, mood, label in LEVELS:
        if wbgt < threshold:
            return mood, label
    return LEVELS[-1][1], LEVELS[-1][2]

def draw_face(mood):
    cx, cy = 64, 34
    eye_y = cy - 8
    oled.fill_rect(cx - 14, eye_y, 4, 4, 1)
    oled.fill_rect(cx + 10, eye_y, 4, 4, 1)
    if mood <= -1:
        oled.line(cx - 17, eye_y - 4, cx - 10, eye_y - 1, 1)
        oled.line(cx + 17, eye_y - 4, cx + 10, eye_y - 1, 1)
    mouth_w = 20
    mouth_y = cy + 10
    amplitude = 6
    for dx in range(-mouth_w, mouth_w + 1):
        dy = mood * amplitude * (1 - (dx / mouth_w) ** 2)
        oled.pixel(cx + dx, int(mouth_y + dy), 1)
    if mood <= -2:
        oled.line(cx + 22, eye_y - 6, cx + 20, eye_y + 2, 1)
        oled.line(cx + 20, eye_y + 2, cx + 24, eye_y + 2, 1)

def draw_status(temp, hum, label, mood):
    oled.fill(0)
    oled.text("T:{}C H:{}%".format(temp, hum), 0, 0)
    draw_face(mood)
    oled.text(label, 40, 56)
    oled.show()

while True:
    try:
        sensor.measure()
        temp = sensor.temperature()
        hum = sensor.humidity()
        wbgt = estimate_wbgt(temp, hum)
        mood, label = classify(wbgt)
        print("気温:{}C 湿度:{}% 推定WBGT:{:.1f} レベル:{}".format(temp, hum, wbgt, label))
        draw_status(temp, hum, label, mood)
    except OSError as e:
        print("センサー読み取りエラー:", e)
    time.sleep(2)