Interfacing LM 35 Temperature sensor with Raspberry pi pico

https://github.com/anokhramesh/Temperature-cont-Relay-LM35

micropython code for High Temperature Indicator.\

# importing the required libraries

from machine import ADC

from machine import Pin

import time

# declare constants

DIODE_OFFSET_VOLTAGE = 0.929  # unit : volt

led_green=Pin(25,Pin.OUT)

led_red=Pin(15,Pin.OUT)

# declaration of pin objects

analogInputPin = ADC(28) # only one positional argument

                          # which is pin id

                          

# main logic of the program

while True:

    # read raw analog signal value

    analogValue = ADC.read_u16(analogInputPin)

    

    # calculate sensor output voltage from raw Analog value

    sensor_voltage = (analogValue / 65535) * 3.3 # unit : Volt

    

    # convert to milli volts

    sensor_voltage = (sensor_voltage - DIODE_OFFSET_VOLTAGE ) * 1000 # unit : milli volt

    

    # calculate temperature from sensor voltage (in millivolt)

    # from datasheet

    # 1 degree celcius = 10 milli volt

        

    temperature = (sensor_voltage/10 ) # unit : degree celcius

        

    time.sleep(1)# sleep is just for demonstration , vary it as per need

        

    print("Temperature = ", temperature, " degree celcius")

    print("\n")

    if temperature <30:

        led_green.on()

    else:

        led_green.off()

    if temperature >31:

        led_red.on()

    else:

        led_red.off()