Hello all. I am putting together a man size robot. I put my plans in the unlisted video above.
So, what parts should I use to make the legs, arms, shoulders etc.?
Also these are the computer components I plan on using. The bleeding edge hardware to get as close to the human mind as possible: pcpartpicker.com/p/dbkNZL
I plan on using a kinect 2.0 for a secondary optics. It’s a powerful tool. It can see in the dark and discern voices in a crowd. microsoft.com/en-us/kinectfo … s/develop/
I think I should use a 4K camera to get the best optic.
In order to avoid spending a huge amount of money, we’d strongly suggest doing some torque calculations at each joint, and drawing the design in CAD.
We’d suggest immediately considering high torque smart servo motors such as the H42 series.
In order to get high torque but keep the actuator lightweight, the price (as you can see) is quite high. They also tend to consume high current, so the main battery does not last long.
This is one of the main reasons why tall humanoids are not everywhere.
If the height of the robot is not incredibly important, you can save yourself considerable time by purchasing a humanoid robot (assembled or kit).
Do you have access to a machine shop. If you plan on machining your own components, I can provide you with some guidance.
Also in terms of powering the robot, LiPos are lightweight compared to most powering options. Just make sure you know what voltage your motors run at. Once you know that, you can find a large capacity battery. You can also design a voltage regulator if you want to retain the current but reduce the voltage.
Finally, keep in mind everything has trade offs. As Coleman mentioned, the motors are expensive if you want them to have sufficient torque yet be lightweight. If you don’t have a strong background in mechanical design and perhaps finite element analysis, I recommend you go with a pre-made kit to start.
You will have to make sure that your structure will be stable and within what safety factor. You have to account for torque, bending, shearflow, plate ruputre etc… You don’t want to design your own chassis to find out it has one weak point where it breaks.
@CBenson Alright, I’ll get CAD if it calls for it. Auto Desk should do the job. The computer parts themselves aren’t too heavy. But how exactly will the components themselves be powered?
@tronicsos I don’t have a machine shop near me but parts are available online. Please provide all the help. Large Capacity eh? Like a car battery? Also, what elements can be used to make the limbs and torso?
Normal battery - probably a LiPo. Ideally choose a system where the electronics operate at the same voltage as the actuators (11.1V seems like a good starting point).
If you plan on paying a vendor to mold / create all of the parts for you, you must create a AutoCAD with proper dimensions / orthographic projections. Honestly, I recommend you pick up a SES from RobotShop or work with a lot of the parts they have already under their lynxmotion series. I think you have to consider what is the path of least resistance. Unless you really have a lot of time on your hand to put into this.
If your aiming that high, you are aware you’ll really strong motors, full finite element analysis, and most likely simulation before you even start machining anything.
The link you provided is to “25 robots” so perhaps you mean the South Korean humanoid entry to the Darpa humanoid challenge based on Robotis’ THOR-OP humanoid in the main image.
You’re looking at a whole lot of $2500 Dynamixel Pro servos; Around 9-11 per leg, 5 per arm and a few in the waist and head. It amounts to around $100,000 in hardware alone and it stands 150cm tall.
