WiFi survey package - WiFi Logger Visualizer

[Sergei Grichine]

Hi All,

There's been some progress recently in this area.

The WiFi Logger Visualizer package was originally created by Michael Wimble, then butchered (forked) by me and recently polished to perfection (well... some) after James Phelan submitted a very valuable PR to my repo.

Here is my WiFi being surveyed by Seggy robot:

It should work with GPS outdoors too (well, it did before), I am waiting for better weather to test it.

All info here:

- https://github.com/slgrobotics/wifi_logger_visualizer  - package repo

- Seggy launch file  (use dev branch!)

All credits go to Michael; thanks to James for valuable contributions. Teamwork, gentlemen!

Let me know if you have any questions.

Best Regards,

-- Sergei

[Pito Salas]

Hi Sergei

Maybe I’m the last to get the message, but what is the use case for this package?

Best,

Pito

Boston Robot Hackers &&
Comp. Sci Faculty, Brandeis University (Emeritus)

> On Jul 12, 2026, at 7:28 PM, Sergei Grichine <vital...@gmail.com> wrote:
>
> Hi All,
>
> There's been some progress recently in this area.
>
> The WiFi Logger Visualizer package was originally created by Michael Wimble, then butchered (forked) by me and recently polished to perfection (well... some) after James Phelan submitted a very valuable PR to my repo.
>
> Here is my WiFi being surveyed by Seggy robot:
>

> <image.png>
>
> It should work with GPS outdoors too (well, it did before), I am waiting for better weather to test it.
>
> All info here:
> - https://github.com/slgrobotics/wifi_logger_visualizer - package repo
> - Seggy launch file (use dev branch!)
>
> All credits go to Michael; thanks to James for valuable contributions. Teamwork, gentlemen!
>
> Let me know if you have any questions.
>
> Best Regards,
> -- Sergei
>

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[Sergei Grichine]

Hi Pito,

Thank you for your interest.

My apologies if I skipped some details in my README file, the package code and Michael Wimble's excellent original documentation will definitely fill the gaps.

I asked Gemini to take a look at https://github.com/slgrobotics/wifi_logger_visualizer/blob/main/README.md and answer your question: "what is the use case for this package?"

Here is our future Overlords' response:

==================

Imagine you have a robot friend who loves to wander around your house. But oh no! Sometimes the robot goes into a quiet corner and loses its connection to the internet. It gets lost and confused because it cannot talk to you anymore.

This package is like giving your robot a special map-making crayon! 🖍️

As the robot drives around, it looks at the internet signal (like counting bars on a phone) and writes down how good it is in every single spot. It saves all these spots in a little memory notebook.

Then, it colors a map for you:

• Green or Blue areas mean "Yay! The internet is super strong here!" 🟩
• Red or Yellow areas mean "Watch out! The internet is very weak here!" 🟥

So, the main use case is helping your robot see the invisible internet signals so it can stay happy, connected, and avoid walking into "dead zones" where it might get stuck and lonely!

======================

I hope this helps.

Best Regards,

-- Sergei

To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/32210790-F01A-4C9C-A487-7C7D3C8FFA45%40gmail.com.