print("Hello, Pi Pico!")
print("This is Experiment - 8 and Objective - 4")
print("Name:Ashwini Kumar Behera; Registration No.: 1941012390") 
print('''Objective : 4	Implementation of Room Temperature Meter with a 
Liquid Crystal Display (LCD) using Raspberry Pi.''')

from lcd1602 import LCD 
import machine
import utime
import math

thermistor=machine.ADC(28)
lcd=LCD()

while True:
    temperature_value=thermistor.read_u16()
    Vr=3.3*float(temperature_value)/65535
    Rt=10000*Vr/(3.3-Vr)
    temp=1/(((math.log(Rt/10000))/3950)+(1/(273.15+25)))
    Cel=temp-273.15
    string="Celsius: %.2f C" % (Cel)
    lcd.message(string)
    utime.sleep(2)
    lcd.clear()