EGG Electric Unicycle - EGG-electric-unicycle/documentation GitHub Wiki
EGG Electric Unicycle is a DIY and OpenSource design that can be customized for specific needs (more batteries, powerful motor, lights, etc). Main characteristics of current version:
- Max velocity up to 30km/h
- 2 battery packs making a total of 264W (range of 20kms on flat roads with a rider of 100kgs)
- 500W motor, 14 inches wheel
- Bluetooth for configuration and reading in real time the speed, current, board temperature, etc
(EGG version 4.1)
An Electric Unicycle (EUC) is a small and simple device. It's composed on mainly 3 parts: motor/wheel; electronic board and battery - all the parts can be bought online and it's easy to assembly. The plastic shell can have a custom design and be 3D printed at home or at local 3D printing shop.
Building our own Electric Unicycle have many advantages:
- Customize for your specific needs: more battery packs for more range; more powerful motor for more speed; etc
- Being able to fix it if something broke with time, like exchanging and old battery for a new one
- Save on price: you can build an high range EUC for the price of a lower range
- Customize the colors
Read more on forum message: http://forum.electricunicycle.org/topic/2906-egg-electric-unicycle%C2%A0diy-and-opensource-design-that-is-easy-to-customize-for-your-specific-needs/
Some pictures and video:
Video: https://www.youtube.com/watch?v=2dLySbCUke8
(EGG EUC version 4.1)
Sources for the 3D files including the 3D printable files (STL) are available here: https://github.com/EGG-electric-unicycle/shell/tree/release/v4.1
This shell were design and built on Jun 2016. The motor is the MicroWorks 500W 30km/h 14" wheel, the board is the MicroWorks 30B4 and the battery is a generic electric unicycle pack of 60V. The mechanical parts like the pedals, pedals arms, nuts and bolts, tire and inner tube were all of them bought from MicroWorks.
To build the shell you will need:
- 8mm tread rods and 4 nuts : 4 pieces of 240mm length each (can be found at cheap on local hardware stores)
- 4 metal hose clamps (can be found at cheap on local hardware stores)
- 3D printed parts - this files were printed on a RepRap type of Prusa I3 3D printer
| Component | Units | Price Unit ($) | Link | Notes |
| MicroWorks motor 14 inches 500W 30km/h | 1 | 69 | https://wholesaler.alibaba.com/product-detail/High-speed-500w-brushless-motor-self_60457898943.html | |
| Controller board 30B4 30km/w with bluetooth | 1 | 55 | https://wholesaler.alibaba.com/product-detail/controller-for-electric-unicycle-with-bluetooth_60244443124.html | |
| Pack of pedals, pedals arms, bolts and nuts | 1 | 25 | There is no link to buy, ask MicroWorks and they will prepare to you. | |
| Pack of hall cable, connecting wire and power switch | 1 | 12.5 | https://wholesaler.alibaba.com/product-detail/factory-price-Self-balancing-unicycle-accessories_60429756487.html | |
| Inner tube 14 inches | 1 | 6 | https://wholesaler.alibaba.com/product-detail/2015-Wholesale-price-inner-tube-for_60234679006.html | |
| Tire 14 inches | 1 | 11 | https://wholesaler.alibaba.com/product-detail/14-inch-rubber-tire-for-single_60247961610.html | |
| TOTAL | 178.5 |