Connect Pico to wifi and AHT20 Temperature & Humidity Sensor via i2C and Serve as JSON

main.py

import os
from microdot import Microdot
import network
from time import sleep
from machine import Pin, I2C
import json
from picozero import pico_led

import ahtx0

logfile = open('log.txt', 'a')
os.dupterm(logfile) # logs to log.txt file

ssid = 'MY_WIFI_NAME'
password = 'MY_WIFI_PW'

i2c = I2C(0, scl=Pin(17), sda=Pin(16), freq=400000)

sensor = ahtx0.AHT10(i2c)

def connect():
    #Connect to WLAN
    pico_led.off()
    sleep(0.2)
    pico_led.on()
    sleep(0.2)
    pico_led.off()
    sleep(0.2)
    pico_led.on()
    sleep(0.2)
    pico_led.off()
    sleep(4)
    wlan = network.WLAN(network.STA_IF)
    wlan.active(False)
    sleep(0.2)
    wlan.active(True)
    sleep(0.2)
    attempt_i = 1
    wlan.connect(ssid, password)
    print('connecting to wifi', ssid)
    while wlan.isconnected() == False:
        pico_led.on()
        sleep(0.5)
        pico_led.off()
        sleep(0.5)
        print('Waiting for connection...', 'Attempt:', attempt_i)
        sleep(5)
        wlan.connect(ssid, password)
        attempt_i += 1
    pico_led.on()
    sleep(1)
    ip = wlan.ifconfig()[0]
    print(f'Connected on {ip}')
    sleep(0.2)
    if wlan.isconnected() == True:
        app = Microdot()

        @app.route('/')
        def index(request):
            if sensor.temperature:
                temp_farenheit = (sensor.temperature * 9/5) + 32
                print("\nTemperature: %0.1f F" % temp_farenheit)
            if sensor.relative_humidity:
                humidity = sensor.relative_humidity
                print("Humidity: %0.1f %%" % sensor.relative_humidity)
            response = {"humidity": str(humidity), "temp_farenheit": str(temp_farenheit)}
            return json.dumps(response), 200, {'Content-Type': 'text/javascript'}

        app.run(port=5000)

connect()