My Onewheel Project

So I have a electric mountain board and a urban board already, naturally next project needs to be something weird…

I’m thinking a one wheel, that is going to be built in a two steep process… I got an original XR motor, and initially I’ll run it with 12S and a VESC 6. But my plan is upgrade it to have a 15S battery and VESC 100/250.

I’m also adding a bunch of WS2812 LED’s under the board, and in front and back of the board, they will be connected to a Adafruit Feather nRF52840.

I’m finishing an iPhone app that will connect to the feather and get some Vesc data and control the LED’s. Feather will of course be connected to VESC using UART. My plan is to CNC the rails on my hackrrspace.

For now I designed a daft model of what I wanted to build… most of the dimensions of the motor are wrong because It still on the mail, but the design has all dimensions parametric, so I can just update the real dimensions and it should recalculate the final version.

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I’m glad you are pioneering this build as I’ve been considering it. Looking forward to your progress :+1::grinning:

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I’ll be following this thread… creepily.

image

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https://ebay.us/Bs2nTa
Witz selling XR motors with nice tires on ebay.

Price of a whole cheap/used esk8 :pleading_face:

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9 posts were merged into an existing topic: Welcome to Derail Jail

when you did something dumb like pop your tire and dent your rim wall it’s what you gotta do sometimes…

not me saw it happen on reddit

rember to take $70 + labor for installing the tire into account

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Got the motor today, took some measurements, updated the model, and printed some parts to ensure that I had my measurements correct. After some teaks I think I got it…

I’m going on my hackrrspace tomorrow laser cut the same part, to test fit screws, and just double check my measurements again, laser cutters are way more precise than my 3d printer… If everything fits I’m gonna CNC my rails…

They are going to be a little bit complex to make, I want to have a channel underneath the rail to mount some ws2812 led’s. I spend most Sunday changing Vesc firmware to allow break lights and animations with the LED’s.

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Wow focusing on such advanced aesthetics in the first iteration is very impressive!

Want any recommendations on battery cells? look like you are using 30Q, solid choice.

Quick update:

Machined all the main parts, and they are looking great! I think I should remove more material to make the board lighter! those aluminum bars are heavy!

I still need to thread all the roles, and I also bought bigger screws that don’t fit to screw in the motor, so I’ll be ordering more screws this week.

The frame has a small grove to add a gasket to make it watertight… I’m only using ip68 rated connectors…

The bottom has a groove for neopixels, I’m finishing a firmware that can handle effects and breaking lights, but that is gonna be another post!


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This is cool stuff man! Looking forward to your future build process. Also little bump for you because you deserve it.

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What will be the total weight of the board? I just design own which is 100% laser cutted :wink:

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I always wondered where the “balance logic” is hidden in those one wheelers ?
Is it all inside the tire ?

Are there schematics or service manuals available for these ?

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The “front” has the weight sensor and the ESC.

Before I really looked into it I thought there was battery on both sides but nope it’s all in the rear.

For my DIY Funwheel I would like to have the battery on both sides considering the VESC will be much smaller than the OW ESC.

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Those rails do look quite heavy, why not just adapt the stock onewheel rails to fit since they are quite light, strong, and readily available.

I see… so the weight sensor is kinda like a variable resistor depending on the angle and it just outputs a signal similar to a remote ?
I though there was some real voodoo logic involved ?

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No, the weight sensor is very dumb. Is foot on = yes / no.

The tilt of the board is what actually controls the pid loop and makes it move.

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Sorry by weight sensor I meant foot sensor. The ESC has all the gyro and smartz in it. Back just has a BMS that communicates with the ESC.

Sadly I shipped my onewheel controller out the other day sold for a measly $130 :disappointed_relieved:

It’s time for 20S tho :laughing:

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I would love to own a onewheel… but its hard to get in Europe :frowning:

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It’s not hard to get in EU, check the dealer page on https://onewheel.com/apps/store-locator

However any repairs requires it to be sent back to California. Which takes months and costs a lot of money. Dealers are not allowed to even replace a tire.

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While there are many dealers listed… on none of any of their homepages the onewheels are listed…
On one dealer in germany I found them listed but they are so much more expensive than in the US. Around 400$ more expensive. That’s not worth it for me…