Bones' Terminator style Robot (page 1)
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*NEW* AVI movie showing 3d model in 360 degrees Bones: Here’s what
I’ve done so far. Every thing is a prototype just to test sizing and
workability.
The handThe hand was
made from mostly components from a hobby shop. The fingers are made from 5mm
aluminum tubing and the hinges are from R/C planes for the rudders etc.
Even the cable
is control cable from the hobby shop used in R/C planes. Excellent, because of
the size (really small). I’m still working on the thumb. As you can see in the
pictures how the cables are mounted. This allows with one pull of the cable
that the whole finger can bend. On a human hand each joint has it’s own muscle.
In my case the
joint near the tip of the finger will be using the same cable as the second
joint to save on servos.
At the moment
there will be 12 servos not including moving the fingers side to side.
At
$15 for the normal sized servos I’m looking at $180 just to do the fingers and
thumb using 12 axes of motion out of the 24 in a human hand. The whole problem
is space (and cost). Trying to fit 24 servos into the forearm unless you go to
mini servos or air muscles like the Shadow Robot Company’s hand.
http://www.shadow.org.uk/products/newhand.shtml . Download the PDF.
Check out the other stuff on the site.
The
air muscles are great. But more of this later.
The HeadThe head is
make from wood and will have full up and down eye movement. The eyes are from
very large dolls. I know a guy who’s a doll doctor. The final design will have
new eyes from acrylic with mini colour cameras build in. The jaw is controlled
by servos and so are the eyes.
The ArmAll the servos
for the hand will be mounted in the forearm and a low-geared motor or large
servo to rotate the forearm. The elbow joint needs some rework. The lifting
motion for the elbow will be air muscles. In the top of the arm there will be
another low-geared motor or large servo to rotate the upper arm. The shoulder
is lifted by air muscles again and the rotation will either be motor or even
air muscle.
Still designing
The ShoulderStill looking
at what type of joint I’m using. Whether it is a fixed shoulder, Only up and
down movement for shrugging (see terminator body photo) or a human like
shoulder with full movement up and down, back and forward. It will have to use
tie rod ends to allow the movement. Something like wishbone suspension on car
but can move back and forward. Probably use something like a windscreen type
motors in the body with universal joints going out to the shoulder.
The SpineWill use metal
rings with rubber or nylon in-between. Same deal as a normal spine having the
data coming out from the spine.
The legsThere aren’t
any. When someone brings out biped balance in a chip I will add them. It will
be tracks from the waist down. In the base unit there will be the drive motors,
batteries, air compressor, air storage tank, the brain, all the air solenoid
valves etc.
The track
design is off the T-34 tank. Here is a site will all the spec you need for
track of that type and even CAD designs.
http://www.gjames.com.au/chris/t34/
The Brain and control system.Will be a
Pentium 4 1.7GHz PC. Running windows XP at the moment until I learn Linux. The
control system through out the body will be using PIC microcontrollers in each
area to run those systems. These units will take the load off the main CPU and
can be flash updated for upgrades without removal.
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