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WiFi Connection Example

Connect Raspberry Pi Pico W to a WiFi network and display connection status.

Overview

This example demonstrates how to connect the Pico W to a WiFi network and monitor the connection status.

Source Code

File: src/pico_scripts/02_wifi_connect.py

Features

  • Connect to WiFi network
  • Display connection status (Connected/Not Connected)
  • Show IP address and network information
  • LED indicates connection status
  • Continuous status monitoring

Hardware Requirements

  • Raspberry Pi Pico W (WiFi required)
  • Micro USB cable
  • 2.4 GHz WiFi network

Configuration

Edit the WiFi credentials in the script:

# Replace with your WiFi details
WIFI_SSID = "YOUR_WIFI_SSID"
WIFI_PASSWORD = "YOUR_WIFI_PASSWORD"

Code Explanation

WiFi Connection

import network

wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)

# Wait for connection
while not wlan.isconnected():
    time.sleep(0.2)

Connection Status

def check_connection_status():
    wlan = network.WLAN(network.STA_IF)

    if wlan.isconnected():
        print("Status: CONNECTED")
        led.on()
    else:
        print("Status: NOT CONNECTED")
        led.off()

Network Information

def print_connection_info(wlan):
    status = wlan.ifconfig()
    print(f"IP Address:  {status[0]}")
    print(f"Subnet Mask: {status[1]}")
    print(f"Gateway:     {status[2]}")
    print(f"DNS Server:  {status[3]}")

Usage

  1. Edit WiFi Credentials
  2. Open 02_wifi_connect.py in Thonny
  3. Replace YOUR_WIFI_SSID with your network name

  4. Replace YOUR_WIFI_PASSWORD with your password

  5. Upload and Run

  6. Save to Pico
  7. Click "Run" (F5)

  8. Watch console for connection status

  9. Expected Output 

    Connecting to WiFi: MyNetwork
WiFi connected successfully!

==================================================
WiFi Connection Information
==================================================
IP Address:  192.168.1.100
Subnet Mask: 255.255.255.0
Gateway:     192.168.1.1
DNS Server:  192.168.1.1
==================================================

Status: CONNECTED

LED Indicators

  • Blinking: Connecting to WiFi
  • Solid ON: Connected
  • OFF: Not connected

Troubleshooting

Can't Connect to WiFi

Check: - SSID and password are correct (case-sensitive) - Using 2.4 GHz network (Pico W doesn't support 5 GHz) - Network is WPA2-Personal (not enterprise) - Move closer to WiFi router

Debug: 

# Check WiFi status code
print(f"Status: {wlan.status()}")

# Status codes:
# 0 = STAT_IDLE
# 1 = STAT_CONNECTING
# 2 = STAT_WRONG_PASSWORD
# 3 = STAT_NO_AP_FOUND
# 4 = STAT_CONNECT_FAIL
# 5 = STAT_GOT_IP (success)

Connection Drops

  • Check WiFi signal strength
  • Ensure stable power supply
  • Check for network interference

Next Steps

Reference

Full source: src/pico_scripts/02_wifi_connect.py