MicroPython: Wi-Fi Manager with ESP32 (ESP8266 compatible)

In this tutorial we’ll show you how to use Wi-Fi Manager with the ESP32 using MicroPython firmware. Wi-Fi Manager allows you to connect your ESP32 to different Access Points (different networks) without having to hard-code your credentials and upload new code to your board.

MicroPython: Wi-Fi Manager with ESP32 ESP8266 compatible

This guide is also fully compatible with the ESP8266 board. However, since Wi-Fi manager library uses quite a lot of memory you may encounter a memory error while saving the script to your board. From our experience, restarting the board after uploading the script, removes the error and makes the project work after that. We recommend using the ESP32, but you can also continue this tutorial using an ESP8266 board.

How Wi-Fi Manager Works

With the Wi-Fi Manager you no longer have to hard-code your network credentials (SSID and password). The ESP32 will set up an Access Point that you can use to configure the network credentials, or it will automatically join to a known saved network.

Wi-Fi Client Setup WiFi Manager MicroPython

Here’s how the process works:

  • When the ESP32 boots for the first time, it’s set as an Access Point;
  • You can connect to that Access Point by establishing a connection with the WiFiManager network and going to the IP address 192.164.4.1;
  • A web page opens that allows you to choose and configure a network;
  • The ESP32 saves those network credentials so that later it can connect to that network (Station mode);
  • Once a new SSID and password is set, the ESP32 reboots, it is set to Station mode and tries to connect to the previously saved network;
  • If it establishes a connection, the process is completed successfully. Otherwise, it will be set up as an Access Point for you to configure new network credentials.

To set up the Wi-Fi Manager on the ESP32 using MicroPython, we’ll use the WiFiManager library by tayfunulu. In the library GitHub page, you can find the following diagram that shows an overview on how everything works.

Prerequisites

To follow this tutorial you need MicroPython firmware installed in your ESP board. You also need an IDE to write and upload the code to your board. We suggest using Thonny IDE or uPyCraft IDE:

Parts Required

For this tutorial you need an ESP32 (or ESP8266 board):

Learn more about MicroPython: Grab our MicroPython Programming with ESP32 and ESP8266 eBook.

WiFiManager MicroPython Library

The library to set up Wi-Fi Manager on the ESP32 isn’t part of the standard MicroPython library by default. So, you need to upload the following library to your ESP board (save it with this exact name wifimgr.py).

import network
import socket
import ure
import time

ap_ssid = "WifiManager"
ap_password = "tayfunulu"
ap_authmode = 3  # WPA2

NETWORK_PROFILES = 'wifi.dat'

wlan_ap = network.WLAN(network.AP_IF)
wlan_sta = network.WLAN(network.STA_IF)

server_socket = None


def get_connection():
    """return a working WLAN(STA_IF) instance or None"""

    # First check if there already is any connection:
    if wlan_sta.isconnected():
        return wlan_sta

    connected = False
    try:
        # ESP connecting to WiFi takes time, wait a bit and try again:
        time.sleep(3)
        if wlan_sta.isconnected():
            return wlan_sta

        # Read known network profiles from file
        profiles = read_profiles()

        # Search WiFis in range
        wlan_sta.active(True)
        networks = wlan_sta.scan()

        AUTHMODE = {0: "open", 1: "WEP", 2: "WPA-PSK", 3: "WPA2-PSK", 4: "WPA/WPA2-PSK"}
        for ssid, bssid, channel, rssi, authmode, hidden in sorted(networks, key=lambda x: x[3], reverse=True):
            ssid = ssid.decode('utf-8')
            encrypted = authmode > 0
            print("ssid: %s chan: %d rssi: %d authmode: %s" % (ssid, channel, rssi, AUTHMODE.get(authmode, '?')))
            if encrypted:
                if ssid in profiles:
                    password = profiles[ssid]
                    connected = do_connect(ssid, password)
                else:
                    print("skipping unknown encrypted network")
            else:  # open
                connected = do_connect(ssid, None)
            if connected:
                break

    except OSError as e:
        print("exception", str(e))

    # start web server for connection manager:
    if not connected:
        connected = start()

    return wlan_sta if connected else None


def read_profiles():
    with open(NETWORK_PROFILES) as f:
        lines = f.readlines()
    profiles = {}
    for line in lines:
        ssid, password = line.strip("\n").split(";")
        profiles[ssid] = password
    return profiles


def write_profiles(profiles):
    lines = []
    for ssid, password in profiles.items():
        lines.append("%s;%s\n" % (ssid, password))
    with open(NETWORK_PROFILES, "w") as f:
        f.write(''.join(lines))


def do_connect(ssid, password):
    wlan_sta.active(True)
    if wlan_sta.isconnected():
        return None
    print('Trying to connect to %s...' % ssid)
    wlan_sta.connect(ssid, password)
    for retry in range(200):
        connected = wlan_sta.isconnected()
        if connected:
            break
        time.sleep(0.1)
        print('.', end='')
    if connected:
        print('\nConnected. Network config: ', wlan_sta.ifconfig())
        
    else:
        print('\nFailed. Not Connected to: ' + ssid)
    return connected


def send_header(client, status_code=200, content_length=None ):
    client.sendall("HTTP/1.0 {} OK\r\n".format(status_code))
    client.sendall("Content-Type: text/html\r\n")
    if content_length is not None:
      client.sendall("Content-Length: {}\r\n".format(content_length))
    client.sendall("\r\n")


def send_response(client, payload, status_code=200):
    content_length = len(payload)
    send_header(client, status_code, content_length)
    if content_length > 0:
        client.sendall(payload)
    client.close()


def handle_root(client):
    wlan_sta.active(True)
    ssids = sorted(ssid.decode('utf-8') for ssid, *_ in wlan_sta.scan())
    send_header(client)
    client.sendall("""\
        <html>
            <h1 style="color: #5e9ca0; text-align: center;">
                <span style="color: #ff0000;">
                    Wi-Fi Client Setup
                </span>
            </h1>
            <form action="configure" method="post">
                <table style="margin-left: auto; margin-right: auto;">
                    <tbody>
    """)
    while len(ssids):
        ssid = ssids.pop(0)
        client.sendall("""\
                        <tr>
                            <td colspan="2">
                                <input type="radio" name="ssid" value="{0}" />{0}
                            </td>
                        </tr>
        """.format(ssid))
    client.sendall("""\
                        <tr>
                            <td>Password:</td>
                            <td><input name="password" type="password" /></td>
                        </tr>
                    </tbody>
                </table>
                <p style="text-align: center;">
                    <input type="submit" value="Submit" />
                </p>
            </form>
            <p>&nbsp;</p>
            <hr />
            <h5>
                <span style="color: #ff0000;">
                    Your ssid and password information will be saved into the
                    "%(filename)s" file in your ESP module for future usage.
                    Be careful about security!
                </span>
            </h5>
            <hr />
            <h2 style="color: #2e6c80;">
                Some useful infos:
            </h2>
            <ul>
                <li>
                    Original code from <a href="https://github.com/cpopp/MicroPythonSamples"
                        target="_blank" rel="noopener">cpopp/MicroPythonSamples</a>.
                </li>
                <li>
                    This code available at <a href="https://github.com/tayfunulu/WiFiManager"
                        target="_blank" rel="noopener">tayfunulu/WiFiManager</a>.
                </li>
            </ul>
        </html>
    """ % dict(filename=NETWORK_PROFILES))
    client.close()


def handle_configure(client, request):
    match = ure.search("ssid=([^&]*)&password=(.*)", request)

    if match is None:
        send_response(client, "Parameters not found", status_code=400)
        return False
    # version 1.9 compatibility
    try:
        ssid = match.group(1).decode("utf-8").replace("%3F", "?").replace("%21", "!")
        password = match.group(2).decode("utf-8").replace("%3F", "?").replace("%21", "!")
    except Exception:
        ssid = match.group(1).replace("%3F", "?").replace("%21", "!")
        password = match.group(2).replace("%3F", "?").replace("%21", "!")

    if len(ssid) == 0:
        send_response(client, "SSID must be provided", status_code=400)
        return False

    if do_connect(ssid, password):
        response = """\
            <html>
                <center>
                    <br><br>
                    <h1 style="color: #5e9ca0; text-align: center;">
                        <span style="color: #ff0000;">
                            ESP successfully connected to WiFi network %(ssid)s.
                        </span>
                    </h1>
                    <br><br>
                </center>
            </html>
        """ % dict(ssid=ssid)
        send_response(client, response)
        time.sleep(1)
        wlan_ap.active(False)
        try:
            profiles = read_profiles()
        except OSError:
            profiles = {}
        profiles[ssid] = password
        write_profiles(profiles)

        time.sleep(5)

        return True
    else:
        response = """\
            <html>
                <center>
                    <h1 style="color: #5e9ca0; text-align: center;">
                        <span style="color: #ff0000;">
                            ESP could not connect to WiFi network %(ssid)s.
                        </span>
                    </h1>
                    <br><br>
                    <form>
                        <input type="button" value="Go back!" onclick="history.back()"></input>
                    </form>
                </center>
            </html>
        """ % dict(ssid=ssid)
        send_response(client, response)
        return False


def handle_not_found(client, url):
    send_response(client, "Path not found: {}".format(url), status_code=404)


def stop():
    global server_socket

    if server_socket:
        server_socket.close()
        server_socket = None


def start(port=80):
    global server_socket

    addr = socket.getaddrinfo('0.0.0.0', port)[0][-1]

    stop()

    wlan_sta.active(True)
    wlan_ap.active(True)

    wlan_ap.config(essid=ap_ssid, password=ap_password, authmode=ap_authmode)

    server_socket = socket.socket()
    server_socket.bind(addr)
    server_socket.listen(1)

    print('Connect to WiFi ssid ' + ap_ssid + ', default password: ' + ap_password)
    print('and access the ESP via your favorite web browser at 192.168.4.1.')
    print('Listening on:', addr)

    while True:
        if wlan_sta.isconnected():
            wlan_ap.active(False)
            return True

        client, addr = server_socket.accept()
        print('client connected from', addr)
        try:
            client.settimeout(5.0)

            request = b""
            try:
                while "\r\n\r\n" not in request:
                    request += client.recv(512)
            except OSError:
                pass

            # Handle form data from Safari on macOS and iOS; it sends \r\n\r\nssid=<ssid>&password=<password>
            try:
                request += client.recv(1024)
                print("Received form data after \\r\\n\\r\\n(i.e. from Safari on macOS or iOS)")
            except OSError:
                pass

            print("Request is: {}".format(request))
            if "HTTP" not in request:  # skip invalid requests
                continue

            # version 1.9 compatibility
            try:
                url = ure.search("(?:GET|POST) /(.*?)(?:\\?.*?)? HTTP", request).group(1).decode("utf-8").rstrip("/")
            except Exception:
                url = ure.search("(?:GET|POST) /(.*?)(?:\\?.*?)? HTTP", request).group(1).rstrip("/")
            print("URL is {}".format(url))

            if url == "":
                handle_root(client)
            elif url == "configure":
                handle_configure(client, request)
            else:
                handle_not_found(client, url)

        finally:
            client.close()

View raw code

Follow the next set of instructions for the IDE you’re using:

  • A. Upload WiFiManager library with uPyCraft IDE
  • B. Upload WiFiManager library with Thonny IDE

A. Upload WiFiManager library with uPyCraft IDE

This section shows how to upload a library using uPyCraft IDE. If you’re using Thonny IDE, read the next section.

1. Create a new file by pressing the New File button.

2. Copy the WiFiManager library code into that file. The WiFiManager library code can be copied here.

3. After copying the code, save the file by pressing the Save button.

Uploading wifmgr Library using upycraft IDE MicroPython

4. Name this new file “wifimgr.py” and press ok.

Saving wifimgr.py library in upycraft IDE

5. Click the Download and Run button.

Install BME280 library MicroPython ESP32 ESP8266 uPyCraft IDE step 3

The file should be saved on the device folder with the name “wifimgr.py” as highlighted in the following figure.

wifimngr Library Successfully Uploaded to ESP32

Now, you can use the library functionalities in your code by importing the library.

B. Upload WiFiManager library with Thonny IDE

If you’re using Thonny IDE, follow the next steps:

1. Copy the library code to a new file. The WiFiManager library code can be copied here.

2. Save that file as wifimgr.py.

3. Go to Device Upload current script with the current name.

Uploading wifmgr Library using Thonny IDE MicroPython

And that’s it. The library was uploaded to your board. To make sure that it was uploaded successfully, in the Shell you can type:

%lsdevice

It should return the files currently saved on your board. One of them should be the wifimgr.py file.

wifimgr.py Library successfully saved on ESP32 MicroPython

After uploading the library to your board, you can use the library functionalities in your code by importing the library.

Code – Setting Up Wi-Fi Manager with the ESP32

The following code implementes Wi-Fi Manager on the ESP32. We’ll add Wi-Fi Manager capabilities to a previous MicroPython Web Server project. By the end of the tutorial, you should be able to implement Wi-Fi Manager in your won projects.

Create a main.py file and copy the following code.

# Complete project details at https://RandomNerdTutorials.com

import wifimgr
from time import sleep
import machine

try:
  import usocket as socket
except:
  import socket

led = machine.Pin(2, machine.Pin.OUT)

wlan = wifimgr.get_connection()
if wlan is None:
    print("Could not initialize the network connection.")
    while True:
        pass  # you shall not pass :D

# Main Code goes here, wlan is a working network.WLAN(STA_IF) instance.
print("ESP OK")

def web_page():
  if led.value() == 1:
    gpio_state="ON"
  else:
    gpio_state="OFF"
  
  html = """<html><head> <title>ESP Web Server</title> <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" href="data:,"> <style>html{font-family: Helvetica; display:inline-block; margin: 0px auto; text-align: center;}
  h1{color: #0F3376; padding: 2vh;}p{font-size: 1.5rem;}.button{display: inline-block; background-color: #e7bd3b; border: none; 
  border-radius: 4px; color: white; padding: 16px 40px; text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}
  .button2{background-color: #4286f4;}</style></head><body> <h1>ESP Web Server</h1> 
  <p>GPIO state: <strong>""" + gpio_state + """</strong></p><p><a href="/?led=on"><button class="button">ON</button></a></p>
  <p><a href="/?led=off"><button class="button button2">OFF</button></a></p></body></html>"""
  return html
  
try:
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  s.bind(('', 80))
  s.listen(5)
except OSError as e:
  machine.reset()

while True:
  try:
    if gc.mem_free() < 102000:
      gc.collect()
    conn, addr = s.accept()
    conn.settimeout(3.0)
    print('Got a connection from %s' % str(addr))
    request = conn.recv(1024)
    conn.settimeout(None)
    request = str(request)
    print('Content = %s' % request)
    led_on = request.find('/?led=on')
    led_off = request.find('/?led=off')
    if led_on == 6:
      print('LED ON')
      led.value(1)
    if led_off == 6:
      print('LED OFF')
      led.value(0)
    response = web_page()
    conn.send('HTTP/1.1 200 OK\n')
    conn.send('Content-Type: text/html\n')
    conn.send('Connection: close\n\n')
    conn.sendall(response)
    conn.close()
  except OSError as e:
    conn.close()
    print('Connection closed')

View raw code

How the Code Works

This code is based on a previous ESP32/ESP8266 MicroPython web server project. We’ve just made a few modifications to add the Wi-Fi Manager.

To add the Wi-Fi Manager, you need to import the library you’ve previously uploaded to your board.

import wifimgr

The following lines of code, handle the Wi-Fi Manager for you:

wlan = wifimgr.get_connection()
if wlan is None:
    print("Could not initialize the network connection.")
    while True:
        pass  # you shall not pass :D

wlan is a working network.WLAN(STA_IF) instance that is initialized by the library. So, you don’t need to include that to set your ESP32 as a Station.

When the ESP32 is first set as an Access Point, it leaves a socket open, which results in an error and makes the ESP32 crash. To make sure that doesn’t happen, we initialize and bind the socket inside try and except statements.

try:
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  s.bind(('', 80))
  s.listen(5)
except OSError as e:
  machine.reset()

In case, there’s a socket left open, we’ll get an OS error, and reset the ESP32 with machine.reset(). This will “forget” the open socket.

When the code runs the second time, the network credentials are already saved, so the ESP32 is not set as an Access Point, there isn’t any problem with open sockets, and the code proceeds smoothly.

Testing the WiFiManager

Upload the main.py file to your ESP32. After that, press the ESP32 on-board RST (EN) button to start running the program.

On the Python Shell, you should get a similar message.

WiFiManager Set Up ESP32 MicroPython

That means that the ESP32 was successfully set as an Access Point. Now, you can connect to that Access Point to choose your network and type your credentials. To do that, follow the next steps.

In your computer, or smartphone, open the Wi-Fi settings and connect to the WifiManager network.

Connect to WiFiManager Network ESP32 MicroPython

The password is tayfunulu. You can change the default SSID and password on the library code.

Enter network password wifimanager

Once you’re successfully connected to the WiFiManager network, open a browser and type 192.168.4.1. The following page should load:

Selecting Wi-Fi Network - WiFiManager MicroPython ESP32

Select your network, type the password and click Submit. After a few seconds, you should receive a success message.

ESP32 successfully connected to Wifi Network - WiFiManager

This message means that your ESP32 is set up as a Wi-Fi Station and it is connected to your local network. Now, to access the ESP32, go again to your Wi-Fi settings in your computer or smartphone and connect again to your network.

In the Python shell, the ESP32 IP address should be printed.

ESP32 Station IP Address - WiFiManager MicroPython

Note: in a real world scenario, you’ll probably won’t have access to the Python shell. In that situation, we recommend printing the IP address on an OLED display.

Open your browser and type that IP address. You’ll get access to the following web server and you can control the ESP32 GPIO.

ESP32 Web Server Control Outputs MicroPython - WiFiManager

Wrapping Up

With the WiFiManager library you no longer have to hard-code your network credentials. The ESP32 sets an Access Point that displays the available Wi-Fi networks. You just need to choose your network and enter your password to set the ESP32 as a Wi-Fi Station.

We hope you’ve found this tutorial useful. You may also like:

Learn more about MicroPython with our eBook: MicroPython Programming with ESP32 and ESP8266

Thanks for reading.



Learn how to build a home automation system and we’ll cover the following main subjects: Node-RED, Node-RED Dashboard, Raspberry Pi, ESP32, ESP8266, MQTT, and InfluxDB database DOWNLOAD »
Learn how to build a home automation system and we’ll cover the following main subjects: Node-RED, Node-RED Dashboard, Raspberry Pi, ESP32, ESP8266, MQTT, and InfluxDB database DOWNLOAD »

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42 thoughts on “MicroPython: Wi-Fi Manager with ESP32 (ESP8266 compatible)”

  1. Hi Sara,

    Is it possible to print the IP address on the phone right after “ESP successfully
    connected to Wifi network” .
    Thanks

    Reply
    • Hello gary,

      yes, that’s possible. I changed lintes … to
      response = “””\

      ESP successfully connected to WiFi network %(ssid)s with IP %(ipAddress)s.

      “”” % {‘ssid’ : ssid, ‘ipAddress’ : wlan_sta.ifconfig()[0]}

      Maybe, that’s not the cleanest solution, but it works fine.

      Kind regards,
      Äd

      Reply
  2. Hi Sara,

    Gary again.
    I have a router named as ” HH GGGG” and another one “KKTT” .
    By using the above same programs, it is unable to connect to “HH GGGG” with message of ‘AP-Connection failed’ , but “KKTT” ok . the difference of this two router looks to be their name. The former one is with space between ‘HH’ & ‘GGGG’. Is really space not accepted ?
    Thanks.

    Reply
    • Hi Gary.
      It’s possible, but I haven’t tested that. So, I can’t be sure.
      In other projects, some of our readers said they had problems with their network credentials when they had spaces. so, that can be the reason.
      Regards,
      Sara

      Reply
      • I have a wifi network named “XXXXXX1234/0” same problem with “/” symbol.

        Failed. Not Connected to: XXXXXX1234%2F0

        Regards,

        Elias

        Reply
        • Hi Elias.
          Maybe you’re not entering the exact characters of your SSID.
          Try uploading the WiFiScan example to see the exact name of your SSID. In your Arduino IDE, go to File > Examples >WiFi > WiFiScan
          I hope this helps.
          Regards,
          Sara

          Reply
    • Hi Gary,

      Try Add .replace(“%20″, ” “) in version compatibility

      version 1.9 compatibility

      try:
      ssid = match.group(1).decode(“utf-8”).replace(“%3F”, “?”).replace(“%21”, “!”).replace(“%2F”, “/”).replace(“%20″, ” “)
      password = match.group(2).decode(“utf-8”).replace(“%3F”, “?”).replace(“%21”, “!”).replace(“%2F”, “/”).replace(“%20″, ” “)
      except Exception:
      ssid = match.group(1).replace(“%3F”, “?”).replace(“%21”, “!”).replace(“%2F”, “/”).replace(“%20″, ” “)
      password = match.group(2).replace(“%3F”, “?”).replace(“%21”, “!”).replace(“%2F”, “/”).replace(“%20″, ” “)

      Regards,

      Elias

      Reply
      • Hello Elias, I too have a router name with spaces, I tried the code above and actually it looked like it was going to work but is still failing with bad request….. any other ideas?

        Reply
    • I changed the following line (old/new) to:
      #ssid = match.group(1).decode(“utf-8”).replace(“%3F”, “?”).replace(“%21”, “!”)
      ssid = match.group(1).decode(“utf-8”).replace(“+”, ” “).replace(“%3F”, “?”).replace(“%21”, “!”)

      On most browsers a space in the query string is replace by a “+” instead of the hex encoding. This might need to be changed for the password too.

      Reply
  3. Hi Sara,

    Thanks for your article
    Do we need to keep same boot.py code with the previous ESP32 Web Server project ?

    Reply
    • Hi.
      It depends on what you have on your boot.py
      To simplify things you can copy everything to the main.py file.
      Regards,
      Sara

      Reply
  4. Hello Sara, love your tutorials
    By any chance do you have an image for the ESP8266 that has the ESP NOW functionality already included?

    Forgot to mention that i am using Micrppython and not Arduino..

    Thanks in advance for your help

    Daniel Trivino

    Reply
  5. First I really appreciate Sara for this post. Thank you very much. when I run this code on my ESP32 chip I found that “handle_root” method from wifimgr.py file is calling multiple times. so it’s taking too much time to list of the surrounding network options on 192.168.4.1 IP address.

    can anyone help me to resolve this issue?

    Thank you.

    Reply
    • I guess it because of “wlan_sta.scan()” taking too much time to get surrounding networks so meanwhile current web page request process task already completed and ESP again need to go to AP Mode. this cycle repeating again and again…

      Reply
  6. Hi, Sara I really appreciate your post. Actually, in my case “handle_root” method from wifimgr.py file is calling multiple times. and network list on 192.168.4.1 takes too much time to load. I guess the problem is that “wlan_sta.scan()” in “handle_root” method takes too much time to get network list and because of that web request process already closed before the scan result and then ESP has to go with again AP mode. this cycle repeating again and again…

    Can anyone give me the solution of this?

    Regards,
    Kunjan Shah

    Reply
    • Hrm, I’ve never seen a problem, but never tested this with more than a couple of networks. Have you tried increasing the timeout (default is client.settimeout(5.0) – around line 297, in start(), in file wifimgr.py) to see?

      I’m at a bit of a loss, and understand this is a wag, but without seeing a trace, I’m at a bit of a loss as to where the problem is coming from.

      Reply
  7. i followed the tutorial, however i dont see the esp32 ssid and hence am not able to connect. using upycraft 1.1 to burn the firmware on esp32 huzzah

    Reply
  8. Hi Sara,

    This is a great solution for esp32. I just have three questions.
    1. What’s the following command for?
    addr = socket.getaddrinfo(‘0.0.0.0’, port)[0][-1]
    Is it really necessary? Instead of addr, can I put the port number in bind command like following?
    server_socket = socket.socket()
    server_socket.bind(80)
    server_socket.listen()
    2. In order to get request url, ure module is used in the code. Is there any way to get url without using ure python module? I really want to get the request url without using ure module. Any good solution?

    Thanks in advance.

    Reply
  9. This is a great tutorial and addresses a real need for provisioning WiFi credentials on an IoT device. I very much appreciate you posting it.

    I ran into a problem and was able to work through it. I add this comment to save others some time getting up and running. I used a generic ESP32 and it worked great. It was able to find and list all of my and my neighbors’ many SSIDs.

    My Android phone saw and connected to the WiFiManager SSID fine, but it would not load a web page from 192.168.4.1. The problem had something to do with my Mobile Data proxy setting that I never figured out. Turning off Mobile Data was my solution to connect and provision the ESP32. It seems my phone was trying to find 192.168.4.1 over the mobile network, and not the WiFi network it was also connected to. This may be an Android 8.1.0 bug.

    Thanks again for a great tutorial.

    Reply
  10. Hi Sara,
    Thanks for this amazing tutorial.
    Is it compulsory that our device(which we are using to control ESP) and ESP board should be under the same network.

    Reply
  11. Hi Sara,
    Thanks for this amazing tutorial.
    Is it compulsory that our ESP board and phone (which we use to control our ES ,
    should be under the same network.

    Reply
  12. Great tutorial. I am trying to implement this functionality into a project on esp32, it works great, but if the esp32 temporarily leaves the range of the wifi router and the connection drops out, or a network or power outage occurs, when the wifi manager reverts back to ap-mode I’m no longer able to connect when the network is restored. Is there a way to periodically leave ap-mode and check to see if a saved network’s availability has been restored ? Appreciate any help.

    Reply
  13. Hi Sara, I encountered a problem here, the device always connected to an open WIFI router without password after reset. Is that possible to lock the WIFI SSID I set in the file wifi.dat?

    Reply
  14. Hi Sera,

    I am using your code and up until the connect to client wifi part, it worked great. However I am experiencing trouble connecting to my client wifi, it shows that “failed to connect to my wifi”. I key in exactly the password of my wifi and pressed submit. Could I please know why would that happen?

    Reply
    • Hi.
      Make sure you’re typing the write SSID and password – take into account uppercase and lowercase.
      Additionally, make sure you don’t add any extra spaces.
      Regards,
      Sara

      Reply
  15. Hi Sara, Great Tutorial, many thanks.

    I’m wanting to join a network that requires a client-id as well as SSID and password. Can you offer any guidance and how this might be achieved?

    Thanks
    Ged

    Reply
  16. Sara,
    Thank you for the great tutorials. I am struggling with integrating this code and concept into a project that monitors a sensor.

    My board seems to always boot as a station even after I have removed the credentials from the code. I don’t ever get it to boot as an AP.

    Can you offer any suggestions?

    All of this occurs within the boot.py file which loops continually reading the sensor, posting to a remote database, and sleeping for 3 minutes. A

    Reply

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