I’m selling my Segway mini

[Thomas Messerschmidt]

I’m selling my Segway mini

It would make a really great 2-wheel balancing robot base. It can go over 10 miles on a single charge.

This is the one that you steer with your knees. The mechanism is easily adaptable for a robot.

The batteries are like new. I barely used it. I had planned to turn it into a robot, but never got around to it.

$90 firm.

[Sergei G]

The $90 is a bargain for the Mini - even if the intent is only riding it.

I am not sure if this is the same I used - here are my notes to encourage the brave buyer:

https://github.com/slgrobotics/robots_bringup/tree/main/Docs/miniPRO

Note the possibility of direct wheels control via Bluetooth protocol - although I wasn't able to make "Mecha mode" work on mine.

Best Regards,

-- Sergei

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From: rssc...@googlegroups.com <rssc...@googlegroups.com> on behalf of Thomas Messerschmidt <thomas...@gmail.com>
Sent: Thursday, September 25, 2025 11:30 PM
To: RSSC-List <rssc...@googlegroups.com>
Subject: [RSSC-List] I’m selling my Segway mini

 

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Thomas


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[Thomas Messerschmidt]

The really interesting thing about this device is that you could easily control it without ever hacking the electronics. You would only need to strap on top of it a robot that could put his center of mass slightly forward to go forward, for example, extend an arm, and position the arm to the rear to go backwards. 

Turning left and right would not be difficult either.  You could fairly easily couple a servo to the base that would move the knee controller (which moves left and right) to then guide the Segway left and right.

That was my idea when I first bought it. But the best made plans of mice and robot builders…

Thomas

On Sep 26, 2025, at 4:03 PM, Sergei G <msg...@hotmail.com> wrote:



The $90 is a bargain for the Mini - even if the intent is only riding it.

I am not sure if this is the same I used - here are my notes to encourage the brave buyer:

https://github.com/slgrobotics/robots_bringup/tree/main/Docs/miniPRO

Note the possibility of direct wheels control via Bluetooth protocol - although I wasn't able to make "Mecha mode" work on mine.

Best Regards,

-- Sergei

---

From: rssc...@googlegroups.com <rssc...@googlegroups.com> on behalf of Thomas Messerschmidt <thomas...@gmail.com>
Sent: Thursday, September 25, 2025 11:30 PM
To: RSSC-List <rssc...@googlegroups.com>
Subject: [RSSC-List] I’m selling my Segway mini

 

I’m selling my Segway mini

It would make a really great 2-wheel balancing robot base. It can go over 10 miles on a single charge.

This is the one that you steer with your knees. The mechanism is easily adaptable for a robot.

The batteries are like new. I barely used it. I had planned to turn it into a robot, but never got around to it.

$90 firm.

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<image0.jpeg>

Thomas


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[Sergei Grichine]

I decided to test Thomas's idea in practice and implement the "brute force" control of my Ninebot miniPRO (similar to what he is offering).

Here is a video:

https://youtu.be/0wBh5IX6nko

As I recently retired my zero-turn lawn mower, I had a couple of strong servos and all the components around them, so the transition was easy.

Here are my notes with a link to photo build log: https://github.com/slgrobotics/robots_bringup/tree/main/Docs/miniPRO

It can be easily "robotized" now - except for wheels odometry isn't accessible. Visual odometry is an option for ROS2 though. Makes a perfect tablebot, as it can carry a lot of beer and goes through 30" standard doors with a margin (22" outer dimensions).

I'd guess Thomas could double the price now ;-)

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Best Regards,

-- Sergei

[Thomas Messerschmidt]

That’s great!

I loved it when you said, “ Makes a perfect tablebot, as it can carry a lot of beer…” 😆😆😆

Thomas

On Sep 29, 2025, at 6:11 PM, Sergei Grichine <vital...@gmail.com> wrote:



[camp .]

> Makes a perfect tablebot...

    You mean "Smart Table." A "TableBOT" is a robot that survives, lives, and plays ON a table - or pays the price!  :-]  

Thanks,

Camp

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[Sergei G]

Yes, guilty as charged, Smart Table it is. Altough at the moment its "smarts" are in my fingers on the R/C control. But - "All the world's a table, and all the robots merely tablebots" - Shakespeare couldn't lie, right? ;-)

BTW, there are two small buttons under the rubber foot pads. When a person stands on miniPRO, these buttons are depressed and balance control logic becomes MUCH more aggressive in keeping the robot in horizontal alignment. With a lot of power to the wheels.

I added a couple of small servos to press these buttons at the R/C switch command. 

When servos are activated, robot can roll up slopes and drive over grass lawn (not uncut crass though). It needs very close supervision and quick action on the R/C, as it may become unruly with wrong inputs. In "normal" mode it can only drive on flat relatively smooth surfaces (i.e. indoors).

Video here: https://photos.app.goo.gl/yHXs7fP7u7ae8fa78

Best Regards,

-- Sergei

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From: rssc...@googlegroups.com <rssc...@googlegroups.com> on behalf of camp . <ca...@camppeavy.com>
Sent: Tuesday, September 30, 2025 12:19 PM
To: RSSC-list <rssc...@googlegroups.com>; Sergei Grichine <vital...@gmail.com>
Cc: Thomas Messerschmidt <thomas...@gmail.com>
Subject: Re: [RSSC-List] I’m selling my Segway mini

 

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