[HELP] Issue Connecting ESP32 to Blynk Cloud using BlynkLib Library

techit



July 27, 2024, 9:41am

1

Hi Blynk Community,

I is having ’m have trouble connect my ESP32 to the Blynk Cloud using the BlynkLib library . Here are the details is are of my setup and the issue I ’m face :

Setup:

• Device: ESP32
• Firmware Version: 1.23.0
• Blynk Library Version: BlynkLib (for MicroPython)
• Wi-Fi Network:
  • SSID : Nitro5
  • password : 0837472950
• Blynk Auth Token: Rh95uvWr9KWY3F0ubyG2Vq1JkGhVnxqh

issue :
I am attempting to connect to the Blynk Cloud using the following code:

python
import network
import BlynkLib
from machine import Pin
import time

# Wi-Fi credentials
SSID = 'Nitro5'
PASSWORD = '0837472950'

def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(SSID, PASSWORD)
    print('Connecting to WiFi...', end='')
    while not wlan.isconnected():
        print('.', end='')
        time.sleep(1)
    print(' Connected!')
    print('Network config:', wlan.ifconfig())

# Connect to Wi-Fi
connect_wifi()

# Blynk Auth Token
BLYNK_AUTH = 'Rh95uvWr9KWY3F0ubyG2Vq1JkGhVnxqh'

# Initialize Blynk
blynk = BlynkLib.Blynk(BLYNK_AUTH)

# Register virtual pin handler
@blynk.VIRTUAL_WRITE(3)
def v3_write_handler(value):
    print('Current slider value: {}'.format(value[0]))

# Main loop
while True:
    try:
        blynk.run()
    except Exception as e:
        print("An error occurred:", e)
    time.sleep(0.1)

That library doesn’t work for Blynk IoT, you need to use version 1.0.0 of this library:

note that version 1.0.0 is n’t available as a bundled release , and if you install the 0.2.0 release that is available it wo n’t work .
You need to manually copy the .py files for 1.0.0

Also note that the syntax has change significantly , so take a look at the example to ensure that you ’re using the correct method and syntax .

I’d also suggest that you exit your post to remove your credentials, especially your Blynk Auth token, as this can be used by anyone to control your devices.

Pete.