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https://github.com/peff74/esp_connect_to_strongest_wifi
a little arduino skript that helps to connect your ESP8266 or ESP32 to the strongest WiFi and reconnet if needed
https://github.com/peff74/esp_connect_to_strongest_wifi
arduino beginner-friendly esp esp32 esp8266 non-blocking reconnect strongest wifi
Last synced: 3 days ago
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a little arduino skript that helps to connect your ESP8266 or ESP32 to the strongest WiFi and reconnet if needed
- Host: GitHub
- URL: https://github.com/peff74/esp_connect_to_strongest_wifi
- Owner: peff74
- Created: 2025-01-29T20:56:07.000Z (7 days ago)
- Default Branch: main
- Last Pushed: 2025-01-31T07:29:13.000Z (5 days ago)
- Last Synced: 2025-01-31T08:27:30.213Z (5 days ago)
- Topics: arduino, beginner-friendly, esp, esp32, esp8266, non-blocking, reconnect, strongest, wifi
- Language: C++
- Homepage:
- Size: 23.4 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# ESP8266 / ESP32 connect to the strongest WiFi Script
This lightweight Arduino script helps your ESP automatically connect to the strongest available WiFi and seamlessly handle reconnections when needed.
## Features
- **Automatically scans and connects to the strongest WiFi signal** matching a predefined SSID.
- **Non-blocking WiFi management** to ensure smooth operation.
- **Dynamic Reconnect Handling**: If the connection drops, it intelligently attempts to reconnect.
- **Power-Saving Mechanism / wifi pollution stopping**: WiFi is temporarily disabled if no connection is possible.
- **Simple and clearly written** so that even beginners (like me) can understand how it works.
## How it Works
### WiFi Connection
1. The ESP **scans for available networks**.
2. It selects the strongest **RSSI (signal strength)** for the given SSID.
3. If no network is found at startup, it restarts after a timeout.
4. If the connection is lost, it **tries to reconnect** within a retry window.
5. If repeated attempts fail, WiFi is temporarily disabled before retrying later.
### Heartbeat Monitoring
- Periodically logs **WiFi state, signal strength, and IP address**.
- Helps with **debugging and monitoring**.
```
Start scanning for SSID Test
Scanning WiFi......
15 networks found:
0: BSSID: 00:11:6B:74:94:61 -77dBm, 46% encrypted Test
1: BSSID: 80:1F:02:AE:43:D8 -93dBm, 14% encrypted Test
2: BSSID: 80:1F:02:AE:41:48 -78dBm, 44% encrypted Test
3: BSSID: 80:1F:02:36:31:98 -80dBm, 40% encrypted Test
4: BSSID: 9C:A2:F4:63:65:60 -45dBm, 100% encrypted PG-WLAN
5: BSSID: 06:0B:BD:5A:DB:5D -17dBm, 100% encrypted Test
6: BSSID: 00:11:6B:74:94:2B -91dBm, 18% encrypted Test
7: BSSID: 80:1F:02:36:3A:98 -63dBm, 74% encrypted Test
8: BSSID: 00:11:6B:74:94:79 -82dBm, 36% encrypted der-hotspot
9: BSSID: 80:1F:02:36:31:C8 -71dBm, 58% encrypted Test
10: BSSID: 32:E5:EE:AD:C4:E4 -88dBm, 24% encrypted AndroidAP
11: BSSID: 80:1F:02:36:39:E0 -86dBm, 28% encrypted Test
12: BSSID: 80:1F:02:AE:41:30 -80dBm, 40% encrypted Test
13: BSSID: 80:1F:02:AE:43:F0 -81dBm, 38% encrypted Test
14: BSSID: 00:11:6B:74:94:55 -80dBm, 40% encrypted Test
Connecting to strongest WiFi signal at No. 5.
Connecting WiFi....................................WiFi Connected
.192.168.206.105
WiFiconnected: 1
WiFi-OFF: 0
WiFi-OFF_count: 0
WiFi-Connecting_count: 0
Local IP: 192.168.206.105
WiFi-RSSI: -22
Measurement_count: 59
Unix-Time: 6
___________________________
WiFiconnected: 1
WiFi-OFF: 0
WiFi-OFF_count: 0
WiFi-Connecting_count: 0
Local IP: 192.168.206.105
WiFi-RSSI: -24
Measurement_count: 58
Unix-Time: 1738189502
___________________________
WiFiconnected: 1
WiFi-OFF: 0
WiFi-OFF_count: 0
WiFi-Connecting_count: 0
Local IP: 192.168.206.105
WiFi-RSSI: -23
Measurement_count: 57
Unix-Time: 1738189503
___________________________
```
- **Hardware:** ESP8266 /ESP32
- **Libraries:**
- `WiFi.h` for ESP32
- `ArduinoOTA.h`
- `time.h`
## How to Use
1. Change `WIFI_SSID` and `WIFI_PASSWORD`.
2. Flash the script to an ESP8266 / ESP32 device.
[](https://hits.seeyoufarm.com)