Older blog entries for Kiryu (starting at number 28)
2 Jun 2004 »
The head for our humanoid has come back from rapid
prototyping and we have sanded and primered the main
shell. No word yet on the final color, but it is
interesting to look at none the less. I just like how
close rapid prototyping is able to get to the actual 3d
CAD model, really remarkable stuff!
Here
is the link
14 Apr 2004 »
We have made further developments on the USC humanoid
project. The head design has been finished by our artist
and I am now working out the internals so that it can be
sent off for rapid prototyping. It should be finished in
less than 2 weeks and will take about a week to get back.
The hands are also designed and ready to send with the
head. You can check it out at the bottome of the page on
the link below:
USC
Humanoid Robot
By the way, we haven't named him and I never anticipated a
problem with this, but suggestions would be great since we
have been unable to decide on one yet!
27 Mar 2004 »
I have provided a page on my website that gives an
overview of the USC humanoid robot that I am working on.
Please stop by and check it out
here.
More pictures will be posted soon.
21 Mar 2004 (updated 21 Mar 2004 at 05:22 UTC) »
The preliminary website for our company has now been
posted
here.
We have shirts etc. with our logo on it available
here.
3 Mar 2004 »
Here are a couple of pictures of the humanoid I am working
on. Yes, for those that have been asking for them, I
finally got around to it :-)
Picture 1
Picture 2
29 Feb 2004 »
Hmmm, start making robots professionally and get bumped
down to Journeyer? :-)
19 Feb 2004 »
Wow, I haven't updated since July!
Well, work continues at USC. The motion capture suit
project is entering testing and verification. Currently,
we are testing three sensors (1 for elbow tracking, 1 for
shoulder tracking, and 1 for reference.) A few months were
burned designing an algorithm that fused the sensor
information using floating point quaternions that could
update at 100 Hz on a 8 bit, 16Mhz Atmel Mega32 processor
with 32k of flash! I tried 2 algorithms from literature,
Linear Gauss-Newton Iteration and a Quaternion-based
Extended Kalman Filter. Both failed, the first because of
a terribly slow 4x4 matrix inversion and the second because
of size limitations. I scraped them and developed my own
linear filter that works pretty well, although we are still
tuning the parameters. Since this project is funded by
DARPA, all of the info will be public domain, which can be
VERY GOOD NEWS for anyone looking for a very small IMU with
3 axis gyro, 3 axis accelerometer, and 3 axis magnetometer
for about 260 dollars in parts! If you are intersted let
me know, I can always let you see what I got.
The humanoid is coming along. I have one arm and the body
rapid prototyped and mostly constructed. I am most likely
going to modify the servos so that I can just talk to them
over a serial line using Atmel's cool addressing function.
This way, I can get positional information back from the
servo, and also program cool little functions like going
slack when the joint hits something. I should have
pictures up soon, I am waiting on the rapid prototyping
company to send a piece that they had accidently left off
of the last order, then I will have both arms and the body
constructed. I feel this will give a better representation
of the project, so I am holding out to take the pictures.
It is cool though! Work continues on the head design to
make it interactive and appealing, yet not scary to
children or us for that matter. It is bigger than everyone
expected, which wasn't very big since we are using digital
servos. The arms are heavy enough to have to worry about
inertia, etc. I think the size helps to distinguish this
robot from the others that look like toys. I do want to
invest a little bit of time over the summer developing a
smaller version that may be purchased for at or under $3000
using rapid prototyping, or under $1000 for bulk plastic
orders. I'll have to see if there is any interest for this
though. Plus, you never know what is going to happen since
I'll be graduating in June. There may be some good news,
but I can't really talk about it now :-)
11 Jul 2003 »
I am developing a new humanoid robot torso. The prototype
is being funded. The size of the robot will be about 2
feet tall (from base to top of head). I have done quite a
bit of work in Pro/E to get the basic design up. It will
go through several changes over several cycles I am sure.
The basic structure can be seen
here. Let me know
if you have any questions or suggestions.
2 Jul 2003 »
Well, I am here at the University of Southern California
Robotic Interaction Lab. I am building an "inexpensive"
motion capture suite using inertial measurement units.
Each unit is coming in at about 200 dollars, but has 6
DOF. I have designed a radio link between the suit and a
host computer that will basically stream the data in. All
the sensor parts are on order and the boards are being
made. Each IMU is only 1.75x1.75x1" and is interfaced
through a minidin connector, which also functions as the
programming port. I think the design is solid and we
expect that you can capture all movements of the arm,
minus the fingers, using just 3 IMUs. So, that makes 6
for the arms, 6 for the legs, 1 for the head, and 1 for
the upper torso = 14 in total. That is about $2800 plus
another $300 for the link, puts us at about $3100, to
capture the entire human body (less fingers & toes). That
is a LOT better than $20,000, which is the base price of
most of the motion capture systems out there. I am also
sketching out the specs for what could turn into a
humanoid robot interaction testbed, we will see.
19 older entries...