Let's Make Robots!

The most useless machine ever

This is a "most useless machine" i made. I used a instructable but it was a comment by "compukidmike" that was the schematic i used. 

here is compukidmike's schematic picture thing  http://www.instructables.com/files/deriv/FCQ/XPAC/G43EFYKB/FCQXPACG43EFYKB.SMALL.jpg 

R2D2 Body

This part of my mini R2D2 project. i'll post all the updates on the main body in this blog page.

This is the first bit of frame with some extra bits. Those pieces are for two doors: one large one that covers allmost the whole back and a small one in the front.

The new "Shark" model of our robot

Last year we spend considerable amount of time building the new version of our robotics vehicle. Here is the result - the small tracked vehicle which might be intereresting for researchers in robotcs, AI, computer vision as well as for DIY enthusiasts. All the model, assembling instructions and software are open source.


Emotions and Motivations as behaviour architecture

Hi all, a few days ago, I started designing the behaviour-based architecture for my robot Hurby. I thought to design it as a Subsumption architecture (see my previous blogs) in which different behaviours compete to be selected as dominant, and hence move Hurby accordingly.

Find a sign by color tracking

An overview of the code factory:
Color detection is the fastest approach for for finding objects in a video image. And it does have its downsides of course.




Proposal of MoMo 0.9 with WiiDAR

I2C IO expander/servo controller using a picaxe 20x2

20x2 picaxeI needed analog ports and servo control for the RPi in my R2D2 project that can be controlled with I2C. Because I have a few spare Picaxe ICs I decided to make one using a Picaxe 20X2. Currently I only need a single servo and a single analog input, but I don’t want to reprogram the Picaxe every time I add another sensor so I wrote the attached code to turn the 20X2 into a general purpose IO expander. 

Some cool documents about Kalman Filter

Ok, i started doing some tests with my IMU module. It turns out that, while it is has very low noise while standing still, is suffer greatly from the robot vibration and movements.. Some research was in the need :)

iPhone as a robot controller made easy.

Just finished the vb.net app for controlling my robot with an iphone. It seems it is much easier than I thought.

The connection is based on Open Sound Control. The iphone sends special messages to my laptop via wi-fi.

More information on OSC. 



"Home Robotics" musings - what needs to be done

Hey guys. I wrote this two years ago before creating my robot. Obviously my vision has a long way to go. But I felt then and now that the biggest issue I could help overcome was the mobility side of the equation. Check this out and tell me where I'm wrong! I won't be happy until there is a robot in every home! :o)

Walter Jr. / Mini Me / Little Walter / Little Buddy / Gilligan

Yup, Walter needs a little buddy. With a WiiCamera onboard, Walter now has the ability to track and follow IR beacons and thus, could in theory, play follow-the-leader and hide-and-seek. But to play these games, he is going to need someone to play with! I bring you Walter Jr. aka Mini me aka Little Walter aka Little Buddy aka (the most famous "little buddy") Gilligan. The main deal with Gilligan is the fact that he has no budget. None. Nada. No money. He is going to have to be built out of whatever I have on hand.

A4988 and steppers My experience and mistakes

I've bought a few of the pololu stepper drivers A4988 to populate a ramps1.3 board used in printrbot. Before building the mechanics I soldered together the ramps board and plugged it all together with my arduino mega2560 and the drivers. Having tried to work out the best software combination with marlin version and either pronterface or replicator G I could not for the life of me get any action from the steppers in the control panel for either host software.

My First Robot

Draft Robot Page: http://letsmakerobots.com/node/12713

My first robot is a Valkyrie CNC using TinHead's example: http://letsmakerobots.com/node/9006


Vector Drawings: http://letsmakerobots.com/files/clone_cnc_vector.pdf (draft)
Measurements will be available for these drawings by December 2009 or if somebody bugs me for it.