मिट्टी की नमी मॉनिटर, फ़ोन अलर्ट के साथ (Pico W, MicroPython)

# Soil moisture monitor - Raspberry Pi Pico W (MicroPython).
# Capacitive sensor v1.2: VCC -> 3V3, GND -> GND, AOUT -> GP26 (ADC0).
# Calibrate DRY and WET with your own sensor: note the raw value in air and in a glass of water.
from machine import ADC, Pin, lightsleep
import time
import network
import json

DRY = 52000   # raw reading in dry air      <- calibrate
WET = 21000   # raw reading in water        <- calibrate
ALERT_BELOW = 30          # % - water the plant below this
CHECK_EVERY_MS = 10 * 60 * 1000

WIFI_SSID = "your-wifi"           # optional: leave as-is to skip phone alerts
WIFI_PASS = "your-password"
NTFY_TOPIC = "your-private-topic"  # https://ntfy.sh/<topic> - pick something unguessable

# The FlashReady flasher saves your settings to /settings.json; they win over the lines above.
try:
    with open("/settings.json") as f:
        _s = json.load(f)
except (OSError, ValueError):
    _s = {}
WIFI_SSID = _s.get("wifi_ssid") or WIFI_SSID
WIFI_PASS = _s.get("wifi_pass") or WIFI_PASS
NTFY_TOPIC = _s.get("ntfy_topic") or NTFY_TOPIC
ALERTS = WIFI_SSID != "your-wifi" and NTFY_TOPIC != "your-private-topic"
if not ALERTS:
    print("Phone alerts off - no Wi-Fi name or ntfy topic set. Flash from flashready.in or type them into main.py.")

sensor = ADC(26)
led = Pin("LED", Pin.OUT)


def moisture_percent():
    raw = sum(sensor.read_u16() for _ in range(8)) // 8  # average out noise
    pct = (DRY - raw) * 100 // (DRY - WET)
    return max(0, min(100, pct)), raw


def notify(message):
    if not ALERTS:
        return
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(WIFI_SSID, WIFI_PASS)
    for _ in range(20):
        if wlan.isconnected():
            break
        time.sleep(0.5)
    if wlan.isconnected():
        try:
            import requests
        except ImportError:
            import urequests as requests
        try:
            requests.post("https://ntfy.sh/" + NTFY_TOPIC, data=message).close()
        except OSError as e:
            print("ntfy failed:", e)
    wlan.active(False)  # radio off again to save power


while True:
    pct, raw = moisture_percent()
    print("Moisture {}% (raw {})".format(pct, raw))
    if pct < ALERT_BELOW:
        led.on()
        notify("Plant needs water: soil moisture {}%".format(pct))
    else:
        led.off()
    lightsleep(CHECK_EVERY_MS)

# Soil moisture monitor - Raspberry Pi Pico W (MicroPython).
# Capacitive sensor v1.2: VCC -> 3V3, GND -> GND, AOUT -> GP26 (ADC0).
# Calibrate DRY and WET with your own sensor: note the raw value in air and in a glass of water.
from machine import ADC, Pin, lightsleep
import time
import network
import json

DRY = 52000   # raw reading in dry air      <- calibrate
WET = 21000   # raw reading in water        <- calibrate
ALERT_BELOW = 30          # % - water the plant below this
CHECK_EVERY_MS = 10 * 60 * 1000

WIFI_SSID = "your-wifi"           # optional: leave as-is to skip phone alerts
WIFI_PASS = "your-password"
NTFY_TOPIC = "your-private-topic"  # https://ntfy.sh/<topic> - pick something unguessable

# The FlashReady flasher saves your settings to /settings.json; they win over the lines above.
try:
    with open("/settings.json") as f:
        _s = json.load(f)
except (OSError, ValueError):
    _s = {}
WIFI_SSID = _s.get("wifi_ssid") or WIFI_SSID
WIFI_PASS = _s.get("wifi_pass") or WIFI_PASS
NTFY_TOPIC = _s.get("ntfy_topic") or NTFY_TOPIC
ALERTS = WIFI_SSID != "your-wifi" and NTFY_TOPIC != "your-private-topic"
if not ALERTS:
    print("Phone alerts off - no Wi-Fi name or ntfy topic set. Flash from flashready.in or type them into main.py.")

sensor = ADC(26)
led = Pin("LED", Pin.OUT)


def moisture_percent():
    raw = sum(sensor.read_u16() for _ in range(8)) // 8  # average out noise
    pct = (DRY - raw) * 100 // (DRY - WET)
    return max(0, min(100, pct)), raw


def notify(message):
    if not ALERTS:
        return
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(WIFI_SSID, WIFI_PASS)
    for _ in range(20):
        if wlan.isconnected():
            break
        time.sleep(0.5)
    if wlan.isconnected():
        try:
            import requests
        except ImportError:
            import urequests as requests
        try:
            requests.post("https://ntfy.sh/" + NTFY_TOPIC, data=message).close()
        except OSError as e:
            print("ntfy failed:", e)
    wlan.active(False)  # radio off again to save power


while True:
    pct, raw = moisture_percent()
    print("Moisture {}% (raw {})".format(pct, raw))
    if pct < ALERT_BELOW:
        led.on()
        notify("Plant needs water: soil moisture {}%".format(pct))
    else:
        led.off()
    lightsleep(CHECK_EVERY_MS)