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SHIN PIECES:
The instruction manual makes a big deal out of the metal pieces used to make the shins, with a sharp side
and a soft side. "For safety during operation the soft edged side of the bracket should be assembled
facing toward the outside of the robot". I couldn't tell any difference between sharp or soft, but fortunately I
did find a way to tell the difference. Each of these pieces has a "3" stamped on one side, and blank on the
other side. I figured that no engineer would want the "3" to be visible, so that side must go face down
towards the servo. It took me 40 minutes to assemble both right and left shins assemblies.
The instruction manual makes a big deal out of the metal pieces used to make the shins, with a sharp side
and a soft side. "For safety during operation the soft edged side of the bracket should be assembled
facing toward the outside of the robot". I couldn't tell any difference between sharp or soft, but fortunately I
did find a way to tell the difference. Each of these pieces has a "3" stamped on one side, and blank on the
other side. I figured that no engineer would want the "3" to be visible, so that side must go face down
towards the servo. It took me 40 minutes to assemble both right and left shins assemblies.
Robonova-1 Build Report - continued
On the top bracket you can see a very faint "3" in the box. To avoid this being visible, I mounted
these brackets with the "3" facing towards the servo, as demonstrated on the bottom bracket.
these brackets with the "3" facing towards the servo, as demonstrated on the bottom bracket.
KNEE:
In this bracket, the upper and lower leg attach together at an angle. Due to the angle, the placing of the screws
is a bit odd. Note in the picture where the two long black screws go, and where the one short silver screw goes.
It makes more sense when you have the pieces in your hands. It took me 47 minutes to assemble the left and
right knee brackets.
In this bracket, the upper and lower leg attach together at an angle. Due to the angle, the placing of the screws
is a bit odd. Note in the picture where the two long black screws go, and where the one short silver screw goes.
It makes more sense when you have the pieces in your hands. It took me 47 minutes to assemble the left and
right knee brackets.
RANGE OF MOTION TEST:
Once you have fully assembled each leg, you
should be able to fold the servos into the position
shown here. This test helps you identify if you
have made any mistakes along the way. The
picture shows the robot's right leg, and we are
viewing the inner-side. This is also a great time
to check the servo wires. Make sure they all
point to the same side of the body, and make
sure they won't get pinched or cut while the joints
move around. After completing the knee
brackets shown above, it took me another 1 hour
and 22 minutes to assemble both the right and
left legs to this point.
Once you have fully assembled each leg, you
should be able to fold the servos into the position
shown here. This test helps you identify if you
have made any mistakes along the way. The
picture shows the robot's right leg, and we are
viewing the inner-side. This is also a great time
to check the servo wires. Make sure they all
point to the same side of the body, and make
sure they won't get pinched or cut while the joints
move around. After completing the knee
brackets shown above, it took me another 1 hour
and 22 minutes to assemble both the right and
left legs to this point.
LEGS COMPLETED:
It took 4 hours and 22 minutes to complete both legs,
but it is a nice sense of accomplishment to see them
standing. Before installing the black shoes, you need to
install the first set of cable clamps for the servos in the
feet. I found this step to be difficult, but necessary. The
ankle brackets could easily damage a servo wire if the
wires are not routed and tied down correctly.
Note in the picture how the servo wires lead towards the
outside of the robot's body. If the wires were to point
inwards, they would surely snag while the robot walked.
Always check your progress against the pictures in the
instruction manual as you go.
It took 4 hours and 22 minutes to complete both legs,
but it is a nice sense of accomplishment to see them
standing. Before installing the black shoes, you need to
install the first set of cable clamps for the servos in the
feet. I found this step to be difficult, but necessary. The
ankle brackets could easily damage a servo wire if the
wires are not routed and tied down correctly.
Note in the picture how the servo wires lead towards the
outside of the robot's body. If the wires were to point
inwards, they would surely snag while the robot walked.
Always check your progress against the pictures in the
instruction manual as you go.
ARMS AND TORSO:
I completed building the arms with no major problems in 1 hour and 15 minutes. The torso took another 1 hour and
30 minutes, and this is where I made my first real mistake. The picture on the left shows how I originally had the
servo wires positioned with the hip servo wires coming up through the middle. I was about to move on to the next
step when I looked carefully at the instruction manual and realized my mistake. Fortunately, re-wiring only took a
few minutes, and I did not have to disassemble anything. See the picture on the right for the correct wiring. If I had
not changed the wiring, it could have interfered with the battery installation much later in the process.
I completed building the arms with no major problems in 1 hour and 15 minutes. The torso took another 1 hour and
30 minutes, and this is where I made my first real mistake. The picture on the left shows how I originally had the
servo wires positioned with the hip servo wires coming up through the middle. I was about to move on to the next
step when I looked carefully at the instruction manual and realized my mistake. Fortunately, re-wiring only took a
few minutes, and I did not have to disassemble anything. See the picture on the right for the correct wiring. If I had
not changed the wiring, it could have interfered with the battery installation much later in the process.
Incorrect wiring layout
Correct wiring layout
FINAL ASSEMBLY:
The robot finally starts to take shape when you can attach
the arms and legs to the torso. Attaching the arms took 20
minutes, and the legs took 21 minutes. After almost 8
hours of screwing and unscrewing, the robot is finally able
to stand on its own.
The robot is starting to get heavy, and difficult to move
around. Note the shabby condition of the wiring. Be
careful as you move the robot around for the final stages
of construction. The wires could easily get pinched in the
joints, or caught on your table edge. I also swept several
small screws from my working area and onto the floor with
the long dangling wires.
Now is also a great time to test the range of motion of each
joint to make sure you have all of the servos installed
correctly.
The robot finally starts to take shape when you can attach
the arms and legs to the torso. Attaching the arms took 20
minutes, and the legs took 21 minutes. After almost 8
hours of screwing and unscrewing, the robot is finally able
to stand on its own.
The robot is starting to get heavy, and difficult to move
around. Note the shabby condition of the wiring. Be
careful as you move the robot around for the final stages
of construction. The wires could easily get pinched in the
joints, or caught on your table edge. I also swept several
small screws from my working area and onto the floor with
the long dangling wires.
Now is also a great time to test the range of motion of each
joint to make sure you have all of the servos installed
correctly.
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NOTE: These robots are not meant for children. All of the humanoid robot models discussed on this website use
powerful servos that can pinch or even crush your fingers if you are not careful. Consult the recommended minimum
age from the manufacturer before allowing children to use any of these robots.
powerful servos that can pinch or even crush your fingers if you are not careful. Consult the recommended minimum
age from the manufacturer before allowing children to use any of these robots.
