Dual Band WiFi Analyzer

This instrctables show how to use Seeedstudio Wio Terminal to make a 2.4 GHz and 5 GHz dual band WiFi analyzer.

Seeedstudio Wio Terminal: https://www.seeedstudio.com/Wio-Terminal-p-4509.ht...

Wio Terminal is a ATSAMD51 dev device embedded Realtek RTL8720DN wireless module. Realtek RTL8720DN chip supports both Bluetooth BLE 5.0 & Wi-Fi 2.4GHz and 5 GHz, so you can use Wio Terminal prototype many IoT project.

Wio Terminal also equipped a 2.4” LCD Screen, onboard IMU(LIS3DHTR), Microphone, Buzzer, microSD card slot, Light sensor, and Infrared Emitter(IR 940nm).

Ref.: https://www.seeedstudio.com/Wio-Terminal-p-4509.h...

My previous instructables, ESP8266 WiFi Analyzer, can scan the current WiFi channels usage status. However, limited by ESP8266 or even ESP32, it only can scan 2.4 GHz frequency range.

5 GHz WiFi channels usage also a very important information for setting up your WiFi router, so we need another WiFi module that can do the job. Realtek RTL8720DN support both 2.4 GHz and 5 GHz, so this instructables will use Wio Terminal to make a new dual band WiFi Analyzer.

The WiFi analyzer visualize scanned WiFi network group by WiFi channels.

Different world region supports different sub-bands. Since the 320 x 240 resolution LCD is very limited, I just selected most common channels to show.

Upper chart shows 2.4 GHz channels 1-14.

Lower chart shows 5 GHz channels 32-68 and 5.9 GHz channels 96-165.

Ref.:

https://en.wikipedia.org/wiki/List_of_WLAN_channel...

Please follow Seeed WiKi to setup Wio Terminal software:

https://wiki.seeedstudio.com/Wio-Terminal-Getting-...

Update the Wireless Core RTL8720 firmware and install all related libraries:

https://wiki.seeedstudio.com/Wio-Terminal-Network-...

Arduino_GFX Library

Download latest Arduino_GFX libraries: (press "Clone or Download" -> "Download ZIP")

https://github.com/moononournation/Arduino_GFX

Import libraries in Arduino IDE. (Arduino IDE "Sketch" Menu -> "Include Library" -> "Add .ZIP Library" -> select downloaded ZIP file)

Compile & Upload

1. Connect Wio Terminal to your computer
2. Open Arduino IDE
3. Open WioWiFiAnalyzer sample code ("File" -> "Example" -> "GFX Library for Arduino" -> "WiFiAnalyzer" -> "WioWiFiAnalyzer")
4. Press Arduino IDE "Upload" button

Wio Terminal can do much more, you may learn more at the official page:

https://www.seeedstudio.com/Wio-Terminal-p-4509.ht...