Let's Make Robots!

design

AVR design contest

Atlmel is holding a design contest that is likely of interest to many LMRtians.

https://www.facebook.com/AtmelCorporation?sk=app_403834839671843&brandloc=DISABLE&app_data=dlt-1

 

 

Heya fellas, Found out about this electronic circuit design contest today. Contest is open to all homo-sapiens on earth and has no entry fee for individuals ! Just … Read more

Humanoid Robot Design Challenge

Hello All! I work for RoboSavvy, an online community for robot enthusiasts, such as yourselves. I am excited to let you know about our Humanoid Design Challenge...

The Challenge: to design an open-source Humanoid Robot affordable for all

Optimizing the Jansen Linkage

 

Still tweaking my optimizer for Jansen (Klann) walking linkages. I started posting some of the more promising optimizations at http://boim.com/Jansen/Favorites

Flat, optimized Jansen Linkage

design

Hi, I am making my first robot and did some research into designs, and decided to try something different. Im essentially making a motorbike LSR. So the back motor is dc- providing the movement and the front is stepper which is mounted directly above the wheel to provided direction. I was wondering what peoples thoughts were.

True Human

Just a thought project (as I never seem to have any time to build the ideas floating around in my head);

I see a lot of wonderful projects built here on LMR, but one thing that always screams to me with humanoid robotic designs is 'x' axis is always considered, but the 'y' axis on robot joints is almost always ignored. Please don't take this as critism, rather a challenge to think about this problem.

Getting Started with 3D Printing

LMR is a great place to work together, learn and build. When you put cool new tools and tech in the hands of the community here, we can make awesome new things! When I first started wanting to build a 3D printer in 2009, there honestly wasn't much documentation out there to learn from  like today, and lots of my questions were left to the Great Google. Here is an attempt to at least collect some info for those starting on the 3D printing path...

Transistors -[Page 3] Switches, common or uncommon

[Added note: while I had intended to add more to this series of pages, to explain FETs (jfet, mosfet, etc.) and so on, I have decided at least for now to not do so. I realised I would just be "reinventing the wheel" as the saying goes, when there are already so many good books on the subject.

Designing the new body for my robot...

The first robot that I have ever made currently has a cardboard body. As one can imagine, cardboard has its limits, both in durability and aestetics..  So the last few weeks I decided to look around for another material... I wanted something that is relatively easy to form and work with and not needing a whole set of new, special, tools... I came across plexiglass as an alternative and my choice was quickly made.

How do you make a two axis pivot?

How would you make a pivot that would allow motion in an arc around a tube of a larger diameter by a tube of a smaller diameter? The pivot must be able to be moved along the larger tube for adjustment.

Some starting ideas:

Concept Design Software

I discovered this really cool software called AutoDesk Sketchbook Pro 2010. Its great for putting your concept ideas down. I have to get use to drawing with a stylus yet. I am going to use this on my project ideas at school. Its pretty inexpensive also. Here is my first attempt at drawing something.

concept design

Sketch to CAD?

I have a paper & pencil sketch of my robotic design and I was wondering if there is anyway to easily create a CAD model by scanning my sketch into the computer. I user Google SketchUp and Alibre Xpress (yeah I'm cheap) and I can't afford anything "more advanced".  If there's anyway to do this, I would love to know, or if you could point me to a tutorial, that would be greatly appreciated.

 

 

Robot arm design, my ideas and progress so far.

Armpic2.jpg

Building an arm for your robot can be the hardest part of robot design. There can be many different designs besides a humanoid design. For example you might have a CNC style XYZ axis or even a tentacle design where multiple joints are surrounded by cables. For BoozeBot I've decided to go for a humanoid design because I would like him to be able to pick things up like a person would. Reguardless of your design the first problem you are likely to face is strength vs weight.

Suggestions for a Book on Circuit Design

I have a fairly strong background in code development, but I would like to build a stronger knowledge in curcuit design. I can read a datasheet and learn how to hook up a certain component, but when it comes to using a specific component for a use other than it is designed for I lack the knowledge to know when to use a capacitor, flyback diodes, etc.

Schematic design software

I'm not positive this is the right place to post this.  Admins please move it if I'm asking in the wrong place.

The Eyes of Beholders

Many, if not all, bots on LMR are a joy to study. But only few of them are "pleasing to the eyes".

Help Designing Your Robot

As said in sociatyofrobots.com, designing is the most important stage of robot building. I spent no time designing Turpis, and that's most likely why it turned out so bad. However, I'm an awful artist, and I need to find a more efficient way to plan. I've tried my hand at Sketchup, and it is uncooperative with my computers. Are there any easy-to-use free software out there?

 

Thanks,

 

 

Brennon