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On 10/24/2018 at 10:36 AM, Alex_from_NZ said:

$50USD sounds more within my budget than $200 for a motherboard replacement.  I would still prefer software modification but cant have everything i guess.

Can you post a link where i can order please?

https://item.taobao.com/item.htm?spm=a312a.7700824.w4004-17354061890.6.213c1c1eD7v7UV&id=577340280309

I'd asked the seller, however he isn't that good in English, so you may have to have someone understands Chinese to help you communicate with him.

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1 hour ago, AndyYellow said:

https://item.taobao.com/item.htm?spm=a312a.7700824.w4004-17354061890.6.213c1c1eD7v7UV&id=577340280309

I'd asked the seller, however he isn't that good in English, so you may have to have someone understands Chinese to help you communicate with him.

Thank you Andy. Maybe Google translate will be of help, hopefully. 

 

I wonder if they can ship to Canada, would love to give it a try! If it's not too out of your way, can you ask him how I can get one shipped here? Many thanks.

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On 12/5/2018 at 3:39 AM, Alex Hamrick said:

Any new updates on altering the speed limit of the minipro?

We are under censure :facepalm:

the other thread was deleted.... :pooping: .... no more words...:sleep1:

 

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On 12/6/2018 at 8:38 AM, zugu said:

We are under censure :facepalm:

the other thread was deleted.... :pooping: .... no more words...:sleep1:

 

NO, it was moved to Commercial.  It LIVES!! :eff006f726:  :popcorn:

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On Friday, December 07, 2018 at 10:29 PM, FreeRide said:

NO, it was moved to Commercial.  It LIVES!! :eff006f726:  :popcorn:

Great ! Thanks :D B)

A wise decision :popcorn:

On Friday, December 07, 2018 at 10:29 PM, FreeRide said:

NO, it was moved to Commercial.  It LIVES!! :eff006f726:  :popcorn:

Great ! Thanks :D B)

A wise decision :popcorn:

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On 10/24/2018 at 9:21 PM, MRN76 said:

Sorry, sealed. This battery is 13Ah. I'm not doing it. my friend did.

Is there any update about this 13AH battery?

After the speed limiter was removed, the energy consumption is higher than before, which made the battery really appealing. I really want to purchase one if it’s on market or even a prototype one is okay to me!

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On 12/7/2018 at 4:29 PM, FreeRide said:

NO, it was moved to Commercial.  It LIVES!! :eff006f726:  :popcorn:

What thread specifically in Commercial? im having trouble finding it

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On 5/26/2017 at 5:52 PM, RooMiniPro said:

I thought I'd start a new thread for this topic for tidiness and leave the steering reversal thread separate as it's a very different approach at getting more speed.

Some of us would really like to increase the top speed of our MiniPros and I'm calling all technically inclined MiniPro riders to brainstorm ideas and hopefully work out a method.  Step one is going to be understanding how exactly the MiniPro detects the speed it's travelling at.  If we can trick it into thinking it's going more slowly than it is, we may be able to achieve a higher top speed.  We know it's not GPS related as it works independently of the software app.  We know it's not a physical limitation of the motors or motor controllers because in reverse it can happily do 25+kph.  So how exactly does it know how fast it's going?  Is it RPM related?  Is it related to the current/voltage supplied to the motors?    

the reason it is restricted is it needs reserve power to upright the rider, otherwise the unit would go faster and could not be recovered, the end result would be the rider would fall forward at high speed and in theory the unit would continue forward running over the rider. the only way to modify would be customized self righting, meaning a smaller rider requires less power to self right than a larger rider. 

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8 hours ago, Segway Sam said:

the reason it is restricted is it needs reserve power to upright the rider

No, I disagree, from a design engineer's point of view you are simplifying the situation too much.

The Ninebot design team wrote an excellent blog detailing the safety margins upon which the MiniPRO was built. You can find it with Google Translate in the Chrome Browser at http://bbs.ninebot.cn/forum.php?mod=viewthread&tid=4100&extra=page%3D1%26filter%3Dtypeid%26typeid%3D43 1/23

Truth is that the current firmware still has flaws which can, and do, result in the rider being thrown forward and run over. It happened to me.

After reading the designer's blog I formed the opinion (as a design engineer) that many of the current speed and weight limitations were based on requirements by the various country's safety authorities, rather than on limitations of the platform. Additionally, when Ninebot was forced to used high-quality LG batteries by the hoverboard-fires scandal, the amount of power the motors had available was actually increased significantly (see my post on battery peak-power testing). This was never exploited to improve the carrying ability of the platform, and hence its safety margin. All firmware versions have the same balance capabilities, that is how they were designed.

Finally, in answer to your question, the current being drawn, and rotational speeds of the motors are what the firmware uses to regulate the power it delivers.The current sensing resistors can be clearly seen at the top of the control board (R004 or R008 SMD power-resistors)

If you want to explore this further, MRN76 has produced an app which allows any of the major Ninebot firmware revisions to be programmed into any MiniPRO, and the original firmware replaced after testing. Search here for "JTAG" to find my posts on implementing those changes. You can learn a heck of a lot about the device by looking at the progression of the designers' thought-processes as the device went to market, and was changed through to its current state (v1.4.1)

Hope that helps...

Edited by trevmar
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