3D modeling – Basics

Robotic – Final Project Prototype Part 4 – Unlimited Revisions.

There is only testing and remodeling, testing and remodeling after i went to simlim to look for a battery 2 weeks ago.

this place sucks money

some panorama shot i took since im there.

and i bought this lead acid battery as it seemed promising

After that, the battery could also power no more than 3 servo at once so I purchases some AC-DC 6V 10A converter online and had been waiting for its arrival since then.

meanwhile waiting, all I did was re-model almost everything again and again…. and I also downloaded ZBrush- a 3d sculpting software and learnt it just for me to sculpt the turtle appearance since i have to learn it sooner or later and luckily I tried it now so I know that there are actually a lot of problems in my current structure when place in the shell I modeled afterwards.

After last post, I’ve built a bigger base mount for the turtle.

This was originally the rough full size for the turtle base, Version1, Version 2 with 2 arm motor attached, and Version 3 with no Arm motor attached.

And I downloaded Zbrush and started to learn how to sculpt something in it and MANNNNN IT IS HARRDDDDD

The starting screen of Zbrush

This is so much difficult than it seemed.

Top View

Bottom View

And then I printed it out in smaller scale to see how it feels.

And to check which layout should work.

and since after I did more research on turtle, I realize that the bone structure of the turtle wasn’t straight and so I tilted the motors to give it an angular tilt for it to move more like a turtle.

then I tested the structure of this configurations.

I also modeled a arm motor connector and found out that this is WAAAYYY to long for it to work properly, and another problem is that there is still not enough tilt, so I changed from a 45 degree tilt to a 22.5 degree tilt.

This is the Version 4 and Version 5 of the motor mount, I’ve decide to make it higher so to be able to turn the arm in the correct direction, I’ve also tried to add the middle servo which will control the turtle head retraction and head/tail turning.

I have to remove the base of the motor temporary so to insert it into the connector because the wire blocks the way.

after I insert it into the connector and closed the motor back. perfect.

This is with Version 5 base and version 2 Motor connector which are much shorter.

Next, I further edit the turtle shell and upscale it to see how it fits into my system, however i found many problems here like it doesnt fit well. Since I can make adjustments to the layout, I decided to use another method to do the leg mechanism.

By combining this lever system straight into the leg.

The 4 generation of motor connector.

If i place it in the shell, it looks so much better

I also changet the layout of the hind legs which uses 2 lesser motor.

This should be the mechanism I will use for the leg, I hope it works.

for now, I have to test them out again.