simpleR

This week, I finalized the project terminology. Now, the most important parts that define the framework are called Base Parts. Using the base parts, everybody can create Prototypes - the reusable parts with particular purpose. The projects are supposed to be assembled using Base and Prototype parts. If a part is modified and has low potential of reusability, such a part is called a Custom Part. 

Also, added the first prototype for robots with two motorized wheels

You can find the prototype used in one of the documentation pictures (the project itself will be later)

The updates are already in the repo:

•  https://github.com/an-dr/simpleR

With the new release v1.1 I've added shells. Now your project can be protected from physical impact. For the updates for to the repository: https://github.com/an-dr/simpleR . 

Also, I've spent some time explaining in detail all the features of the framework. Here they are (copy-paste from the repo)

Small Range of Parts

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The framework is based on a small range of parts that can be easily combined to create a wide range of projects.

See: Base Framework Parts

Scalable

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Choose the project of the size you need, and extend it in the future.

Flexible

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Adjust the project to your needs. Add or remove platforms, choose the right volume for you components.

Easily Printable

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All parts are designed for easy 3D printing. No supports are needed.

Rigid

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The special shape of the bars makes the structure stable and rigid in all directions. The shells provide additional structural support.

Modifiable

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All parts are designed for easy modification. They are shipped in STEP format, which can be opened in any CAD software.

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Embeddable Nuts

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The nuts are accessible and reliable alternative to metal inserts than provide a strong and reusable connection between the parts.

Modular

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All the parts are made in the way so you don't have to re-print large volumes of plastic when you want to make a small change. Reprint only necessary parts.

Hello! Just finished with the project repository, will update it with every framework release. So far it is version 1.0

Link: https://github.com/an-dr/simpleR

I was not fully satisfied with my design for 2+ levels. 

It has 3 flaws:

1. The middle level part is different with the others → it can be used only in 2+ configuration
2. The vertical mounts are significantly different for each configuration: 1, 2, 2+
3. While the bending of the construction perpendicularly the vertical mounts resist the bend, bending along the vertical mounts depends on the printing precision and might allow the levels to dance left and right.

Here how I finally solved all these problems

1. I replaced the vertical mounts with 4 perforated bars, now I can use the same parts across all the assembly, and decrease the amount of part types

2. The bars can have multiple mounting holes to adjust the assembly needs. The lanes themselves can differ only by the length.

3. The bars of the photos above has two directing bumps to center the position and resist bending perpendicularly to the bar main plane. Today I went farther and made the pattern more complex to improve the qualities

Extra Update. I also embedded nuts onto the mounts, so the connection can be stronger and more reliable

Experiments with the LeOn v2 showed that having the same universal connector for both internal and external structures is not ideal. If there is no perfect fit between the cover, and internals it cases wrapping of the shell

To solve the issue, I've decided to separate the mounts for the internal structures from the external ones. The mount now looks more complex, but I expect it to provide a better fit.

Here is the reimplementation of my robot LeOn, using the simpleR framework. Will add details and when it is fully ready

Also considering reimplementing my other projects using the framework....