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Are there any horizontal install control boards for unicycles (pereferably at 36v). For obvious form factor reasons, all the boards i’m seeing are vertical install.   I’m looking to use the board in a onewheel type project so I can’t mount the board vertically (not enough space).   The hover board controllers won’t work since they are designed to run two motors and will error out with only one motor (some folks have gotten around this by bolting two motors together but i’d like to avoid this) 

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Posted (edited)

Could be wrong, but my guess is "no", while there are some models that use horizontal boards, I don't recall seeing any wheels with smaller than 15S (63V max) battery or maybe there was some 14S (58.8V max) less known wheel in the early days, so unless you can use batteries with that high voltages, there don't seem to be options. 36V (nominal, I suppose) battery is 10S (42V max).

At least KS16's and (I think) Rockwheel GT16's use horizontal boards, possibly others. KS16's use 16S (67.2V max) and GT16's use 20S (84V max), newer KS16(S) boards might be difficult or impossible to use without original battery packs, as it seems they have some form of communication directly with the battery BMS's, so they might not work with a different type of BMS. 

Don't remember the name of the board that some DIY projects used (look for a 3d-printed wheel in this forum section), and I recall it was discontinued at some point (don't know if it has since become available again), but I think for that board you could ask the company producing the board to upload the firmware for either vertical or horizontal installation, it just comes down to which axes of the IMU are interpreted as being front-to-back, side-to-side and up/down.

Edited by esaj

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4 minutes ago, esaj said:

Don't remember the name of the board that some DIY projects used

Microworks? @Nodore

 

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Posted (edited)
18 minutes ago, Chriull said:

Microworks? @Nodore

 

Yeah, that's it... looks like they're coming back then. :)  Although from a quick glance it seems they now have a different board (30A, not 30B4), but at least something. Only problem is that the minimum order seems to be 500 boards... :o

https://microworks.en.alibaba.com/product/60430498308-801473537/self_balancing_scooter_sourcing_codes_programming_board.html?spm=a2700.icbuShop.41413.8.336d7435UNeITO

 

EDIT: Oh right, no idea what motors that works with, the motor driving code needs to be adjusted for the motor parameters, you can't slap just any 3-phase BLDC/PMSM motor on it and expect it to drive it correctly...

Edited by esaj

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Thx all.  I e-mailed with the Microworks reps and there is nothing on the horizon there for DIYers.  Horizontal 48V and higher voltage boards could also be an option.

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Hi I am in  a similar boat.  I am working on a mono wheel skateboard.  I reached out to Microworks and also found out that that board is vertical only.  Cant be modded to horizontal use.

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Hi Chris,

Here are the possible options that I've found after researching this topic for way too many hours:

1. Bolt two hoover board wheels together like this guy: https://evnerds.com/electric-vehicles/e-unicycle-hoverboard-news/diy-onewheel-electric-skateboard-from-poland/

He has a few videos on his facebook page etc.  While his solution is creative in terms of getting a hooverboard control board to run a one wheel, I'm concerned about keeping the hub air tight and the wheel inflated with his design (I race go karts so fairly familiar with these hubs).

2. Build/code your own control board, see https://github.com/blezalex/WheelBoardMain

This seems like a large undertaking unless one has an EE background.  Probably more time required than I want to invest in the project.

3.Build a one wheel with a large wheel to accommodate a vertical control board from a unicycle.  Not really an option for me since I already have the smaller hub motor etc.  I dont care for this route because the larger wheel changes the entire dynamics of the one wheel.

4.  See if Unicool or another Chinese one wheel clone company will sell the control board as a spare part.  I tried to get in touch with Unicool but didnt get a response.

 

Let me know if you come up with anything that works.

Best of luck!

 

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Cheers @Nodore.  I had come across the Zby the other week, his frankenboard is fantastic.  Thank you for link 2.  That was useful.  I have another I saw which was good too - https://www.instructables.com/id/DIY-Self-Balancing-One-Wheel-Vehicle/

IMU on the way, will use one of my spare Arduinos to have a play before I commit too much.

 

 

 

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