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Monowheel/Bi-wheel (Patreon)

Published:
2023-12-04 13:55:29
Imported:
2023-12

Content

Here's next week's video, early for Patrons, this one goes out publicly on Tues 12th. This is a combination of the Pedrail project and a 'monowheel', but the idea was that it's mechanically stable by itself, and a fun thing to drive. A few weird things happen though...

There's only one video after this before the end of the year which is the Makers' Secret Santa, but as usual that may be finished at the last minute ;-)

Files

Pedrail Biwheel - PREVIEW VERSION

I previously built a small MonoWheel which is a single wheel that runs along with one motor driving it. It balances on its edge like rolling a coin. Monowheels have been built large enough for people to ride in, which looks like a fun project. My monowheel had some stability control which measured the angle of the internals and modified the motor speed. This meant that the internals always remained at one angle instead of oscillating between driving up the inside of the wheel and falling down again, which is what happens if you just run the motor at a constant speed. But is there an easier way to make a fun radio controlled vehicle which is inherently stable? You can support me on Patreon, join my Discord, or buy my Merchandise: *************************** Discord: https://discord.com/invite/fc6MedG7eW Patreon: https://www.patreon.com/xrobots Merchandise: https://teespring.com/stores/james-bruton *************************** Other socials: *************************** Instagram: https://www.instagram.com/xrobotsuk Twitter: https://twitter.com/xrobotsuk Facebook: https://www.facebook.com/xrobotsuk/ *************************** Affiliate links - I will get some money of you use them to sign up or buy something: *************************** 10% off at https://www.3dfuel.com/XROBOTS - use code XROBOTS at the cart screen. Music for your YouTube videos: http://share.epidemicsound.com/xrobots *************************** CAD and Code for my projects: https://github.com/XRobots Huge thanks to my Patrons, without whom my standard of living would drastically decline. Like, inside out-Farm Foods bag decline. Plus a very special shoutout to Lulzbot, Inc who keep me in LulzBot 3D printers and support me via Patreon. HARDWARE/SOFTWARE Below you can also find a lot of the typical tools, equipment and supplies used in my projects: Filament from: https://www.3dfuel.com/ Lulzbot 3D Printers: http://bit.ly/2Sj6nil Bearings from: https://simplybearings.co.uk/ Lincoln Electric Welder: https://bit.ly/2Rqhqos CNC Router: https://bit.ly/2QdsNjt Ryobi Tools: http://bit.ly/2RhArcD 3D Printer Filament: http://bit.ly/2PdcdUu Soldering Iron: http://bit.ly/2DrNWDR Vectric CNC Software: http://bit.ly/2zxpZqv

Comments

tephlon

I wonder if you had more of the mass lower and centralized, or even more (larger batteries), would help prevent the center section from over-rotating? Love it! Such a unique combination of ideas. This would make for such a crazy ride when scaled up!

the AC

I'm sure there's a physics explanation for the weird little dance when it turns in place. I wonder if you the leaning can be more programmatically subtle to account for turning at speed rather than simple jaunts around the kitchen; though I imagine it's only useful at significant speeds. Otherwise, like you discovered, it loses traction pretty fast. Cool ideas being implemented, as always.

XRobots
>>123770800

That would probably help a bit, but I think the main problem is all the legs getting stick and the friction caused as they move in and out / getting closer and further apart. I'd like to make a big one I can stand in, but it might be a crushing hazard ;-)

XRobots
>>123777928

It could probably have some form of dynamic stability to make it drive more smoothly, but I didn't want to fix it that way. I guess leaning angle could be derived from a combination of forward velocity and the differential drive.