from machine import ADC, Pin, I2C
import network
import urequests
import time

# Constants
THINGSPEAK_API_KEY = 'YOUR_THINGSPEAK_WRITE_API_KEY'
THINGSPEAK_CHANNEL_ID = 'YOUR_CHANNEL_ID'

# Sensor Pins
voltage_sensor_pin = ADC(Pin(34))  # Voltage sensor connected to GPIO34
current_sensor_pin = ADC(Pin(35))  # Current sensor connected to GPIO35
lm35_sensor_pin = ADC(Pin(32))      # LM35 sensor connected to GPIO32
ldr_sensor_pin = ADC(Pin(33))       # LDR sensor connected to GPIO33

# Function to read sensors
def read_sensors():
    voltage = voltage_sensor_pin.read() * (5 / 1023)  # Convert ADC value to voltage
    current = current_sensor_pin.read() * (5 / 1023)    # Convert ADC value to current
    temperature = lm35_sensor_pin.read() * (5 / 1023) * 100  # Convert to Celsius
    light_intensity = ldr_sensor_pin.read()  # Read LDR value

    return voltage, current, temperature, light_intensity

# Function to send data to ThingSpeak
def send_to_thingspeak(voltage, current, temperature, light_intensity):
    url = f"https://api.thingspeak.com/update?api_key={THINGSPEAK_API_KEY}&field1={voltage}&field2={current}&field3={temperature}&field4={light_intensity}"
    response = urequests.get(url)
    print(response.text)
    response.close()

# Connect to Wi-Fi
def connect_to_wifi():
    ssid = 'YOUR_SSID'
    password = 'YOUR_PASSWORD'
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(ssid, password)

    while not wlan.isconnected():
        time.sleep(1)
        
    print("Connected to Wi-Fi")

# Main loop
def main():
    connect_to_wifi()
    while True:
        voltage, current, temperature, light_intensity = read_sensors()
        send_to_thingspeak(voltage, current, temperature, light_intensity)
        time.sleep(60)  # Send data every 60 seconds

if __name__ == '__main__':
    main()