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Anonymous11/07/25, 02:20No.2955898My Advanced Realistic Humanoid Robots Project - #6
Last Threads: https://warosu.org/diy/?task=search2&search_username=artbyrobot
To begin: the project goal: I am working to make a series of humanoid robots. I am using a Biblical theme of naming the first 3 robots I make Adam, Eve, and Abel. The goal is for these robots to have human body inspired musculoskeletal systems, advanced AI, and that they look human and pass for human to a casual observer at least at a distance. They must be able to walk, talk, run, dance, do sports, do chores, manufacture products, and make more robots just like themselves if not even better. My aim is to build a single robot arm and head and then add sufficiently advanced AI to that arm and head to enable it to build the rest of its own body for me. This way I am delegating the work of building the majority of my first humanoid robot to that robot rather than doing that work myself - and this is to save me time.
In a like manner, my goal with the AI is to code just enough AI that the AI can begin coding itself and this way I don't have to code most of the AI myself because it will self create itself. I liken this to building a seed and that seed growing into a tree because for me to code that tree would take too long for me and just creating the seed would then save me time.
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Anon11/07/25, 05:51No.2955924
I find it kinda funny that there's a lot of control algorithms and methods and optimization techniques that got some really weird names, like "Bang-bang function parameter optimization" and "Hummingbird optimization" even though the only the thing they do is just to figure out which curve from a family of curves best fits a certain set of constraints, which can then be used to keep something really dull and gay like an industrial liquid solution at a certain ratio. The brightest minds in Control Engineering are literally just designing techniques and setting up simulations for shit that sounds like it should be tried and true by now, like optimizing the number of Syrian and Palestinian children killed by dropping a bomb from a certain height.Meanwhile OP might not know that much about MATLAB or other fancy math scripting langs like that, but at least he got good intentions and wants to make something that looks good.
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Anon11/07/25, 07:03No.2955929
imagine actually creating an ai capable of self refinement and instead of allowing it to solve lifes greatest problems and/or trigger the start of a technological singularity but instead work on whatever retarded shit this is
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Anon11/07/25, 19:09No.2955998
Hey man. I rarely check in on your threads to see how your bot is coming along.
Any real progress? Do you have the body fully assembled? Are you just working on software? What's the deets, my dude?
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Anon11/08/25, 00:50No.2956055
Couple updates:An audience member redid my brushless DC motor schematic in the traditional commonplace formatting which for most is easier/quicker to read and understand due to familiarity. So I'm reposting it. It looks mostly accurate although I have since added a 100nF ceramic capacitor between the gate and source of the highside mosfets to reduce ringing issues. Standard practice according to chatgpt. I also changed the LED color to orange because chatgpt said blue would show through the silicone skin more and add a cold inner glow and we want it to look like real skin so no blue.As to why the highside mosfets get a 100nF ceramic gate capacitor but not the lowside, here was how chatgpt explained it to me:-High-side MOSFETs:Their source pin moves up and down with the motor phase (it’s not at a fixed potential).During switching, the drain and source both move rapidly, and the gate voltage must track that movement precisely — any ringing or inductive noise can momentarily over-stress Vgs.That’s why we add the small capacitor across gate and source: it tames that high-frequency ringing and helps hold the gate steady relative to its moving source.Low-side MOSFETs:Their source is solidly tied to ground, so the gate always swings relative to a fixed, quiet reference.They don’t experience the same “floating” gate drive or large dv/dt transitions on the source pin.So, the gate is inherently more stable, and you don’t need that extra 100 nF G–S capacitor.
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Anon11/08/25, 00:51No.2956056
Here is my updated schematic:
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Anon11/08/25, 00:52No.2956057
In further news, I tediously installed the new 100nF ceramic capacitor between gate and source of the mosfet. Due to the close proximity to the 10k ohm Vgs resistor and various other low temp solder joints in the immediate vicinity, any heat applied would surely have caused those to desolder and the whole thing to start falling apart so I ended up just soldering nickel strips to either side of the 100nF ceramic capacitor (by itself off to the side) and then used the tip of a sewing needle to apply a tiny amount of conductive silver glue onto the gate and source nickel strips coming off the IRLR7843PBF mosfet and then pressed the nickel strips of the ceramic capacitor into that. I put that in front of a mercury vapor bulb for an hour or so to cure and then applied another generous helping of conductive silver glue over the top of the joint. I then baked that another 7 hours under the mercury vapor bulb again. This photo shows the final result.It appears to be a solid joint and I think this is a great way to make attachments when you can't use soldering! It might even be better than soldering in some cases from a ease of application perspective but not sure yet on that.
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Anon11/08/25, 07:02No.2956125
I ought to design a small non-human robot, but I have nothing I need automated cause I do everything myself.
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Anon11/10/25, 23:05No.2956773
Quoting a bunch of ChatGPT at us makes you look so retarded.
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Anon11/11/25, 19:25No.2956945
Okay so here I have attached the LED and resistor pair with their 30ga wire wrapping wire onto my highside mosfet's front face. I may add conductive silver paste to the wire wraps in the future if any issues come up there. However, I am wondering if just tightly wrapping it in electrical tape would more or less guarantee the connection doesn't open circuit. We'll see.
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Anon11/11/25, 19:28No.2956946
I also finished soldering together six braided copper solder wick strands which will act as my heatsink for my highside mosfet. I am still deliberating on how to attach it to back of mosfet in such a way that it will be electrically isolated but thermally conductive. I am leaning toward thermal tape for this.
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Anon11/11/25, 21:55No.2956980
Here's the thermal tape I bought for mosfet heat sinking off Amazon:
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Anon11/12/25, 05:25No.2957066
>$40k just to make a prototype of a humanoid robot
Dang, it's gonna be expensive to make Astro-Boy for real.
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Anon11/12/25, 05:42No.2957071
Yo OP, have you thought of wheels? You could probably save up some space and power by just using motors directly coupled to wheels, unless you want your robots to be capable of doing kickboxing.
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Anon11/12/25, 17:33No.2957145
Soon we'll be at 1000 posts, and we have a few soldered smd components (not to a PCB mind you), some string threaded through a plastic tube, and that one skeletal hand image with fabric sewn over it to show for it.
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Anon11/13/25, 04:37No.2957276
Maya is a 3d modeling software program. You said that it is not proper which by extension means that you are suggesting it is not able to provide computer aided design functionality (the definition of CAD). And yet 3d modeling is 100% CAD and 100% proper in any software that can provide this functionality. Therefore, my paraphrase "Computer aided design cannot be done in 3d modeling software" is accurate since you did say Maya, a 3d modeling software, is not proper IE it cannot be used for CAD work.I said millimeter accuracy CAD was achieved and you said a millimeter is huge and will lead to clearance issues. It is not at all a misrepresentation of that to say "you aren't able to shift around pieces in a millimeter in any direciton" is a accurate paraphrase because it perfectly embodies your complaint.Anyways, you said I was lying and now were indisputably proven wrong. I expect a full apology.
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Anon11/13/25, 18:49No.2957371
this guy said "But that's the issue, the project has been going for ages and the stuff that there's to show for it is legitimately maybe a week of work if I'm being generous. Two weeks if we factor in all the daydreaming and consider that "work" (we shouldn't)." --- this is ridiculous to me. I spent like 40 hours on the AI development, creating a digital heirarchical and topical folder structure with notepad files to create a organized mind for the robot and a broken down system of commands and knowledge base. actually may have been 60-70 hours even. I also started a simulation engine and computer vision and tts and tts and chatbot stuff for it even started making a custom operating system from scratch which I may one day use for it potetially. all of that maybe 300 hours in? then I also did a good 70 hours of CAD work on the robot overal layout and maybe another 50-70 hours of schematics work in 3d and 2d with notes. then another good I dunno 4k horus of research and note taking. And then physical prototyping work of robot bones and ligaments and motor attachments and pulley based downgearing systems and tensioning systems and rotating turn in place pulley systems anotehr say 300 horus of work. then anotehr 30 hours of work on a steel framed robot prototype progress. a good 150 hours of fiberglass skeleton making for the adam robot. He says all of this is 2 weeks of work if being generous!?
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Anon11/13/25, 18:59No.2957372
maybe fiberglass was another 60 hours on top of that for the sculpting work. and also the electronics prototyping work actual soldering oh and the researching and buying parts and organizing and labeling them and putting into bags and building shelves for all of it so I can find things my goodness even that was massive. had to be say 400 hours right there?then another good 80 hours of tearing down appliances and what not to study their insides and learn about electronics design in a hands on way like that and pulling out parts I can reuse for the robot.also building the project website and blog and the many threads I share it on, all meant to publicize, bounce ideas, get suggestions and feedback, etc...and all the youtube videos I made meticulously documenting all my progress. 800 hours right there I bet.
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Anon11/13/25, 22:45No.2957414
>what part made you conclude that?
Your arduino connects to the gate of transistor that is meant to pull the gate of another higher power transistor low, but it cant do this because it is connected to the source of the power transistor.>Im using N-FETs, not NPN BJTs
Replacing NPNs with N-Channel MOSFETs makes no fundamental difference, but you have completely changed the circuit topology.>not sure what pull down transistor means but the A09T is at source and acts as a lowside switch providing ground connection to source which completes the gate to source circuit and raises the Vgs to switch the IRLR7843PBF on.
It is infinitely easier to control a mosfet using the gate, rather than fucking around with the source voltage. If you are concerned about miniaturisation, look at the original schematic. Each switch was only 4 components. IIRC guy's main issues were seemingly based around software and timing/control, the schematic seems to be the easy part here.>chatgpt stuff
ChatGPT is designed to agree with whatever you say to give you a dopamine hit so you use it instead of other AI websites. It can be correct sometimes, but I would take whatever it says with a mountain of salt.>TO-251 is larger
Yes, but it is much easier to find/mount to a proper heatsink. If you still want to use copper braid, heat shrink will work better on a long drain pin rather than around the drain of a TO-252 package which is the size of the transistor (heat shrink might not work well with such a flat, rectangular shape, at that point, wrapping the transistor in Kapton tape for insulation and durability would work much better)>P Channels for current sourcing
You used AI slop, so I would just say as a learning exercise go ask the AI why P-channel fets are commonly used in current sourcing, and why N-channel fets are commonly used in current sinking. Ofc you don't need to use P-channel fets, its just a suggestion.
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Anon11/17/25, 22:37No.2958355
>elite robotocist
>Can't figure out how to find the max ADC polling rate of a given mcu after seven months
If you keep going at this pace you'll ascend to the level of highschool tinkerer right around your fiftieth birthday, Gary
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Anon11/17/25, 23:00No.2958361
Someone on the EEVblog forums pressed him on timelines and his roadmap includes dying then waiting for God to let him reincarnate to continue working on his robot forever
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Anon11/18/25, 01:17No.2958408
Your dad thinks you're a failure. He sees you all the time because you live with your parents, so I don't know why I wouldn't trust him to know. You are a failure. You play daydream make believe around your dumbass narcissist fantasies to try and block thinking about that out. You have never made anything. Even your game bot "goes to another school" and we can never see anything about it.
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Anon11/26/25, 03:41No.2960218
I'm really invested in your project anon. Persevere! I have similar plans and I am learning a lot from your project.
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Anon11/26/25, 08:08No.2960256
Hi OP what program are you using
You see I am something of creator myself and want to make android similiar to David from prometheus
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Anon12/01/25, 21:12No.2961379
With all this religious talk
what's Gods opinion on making and using sex-robots? and people designing and building them (or not building them judging on this thread)?
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Anon12/02/25, 01:50No.2961442
How come mods have not banned this fucking troll yet? It's obvious he's being deceitful and dishonest, he's been confronted with so many to the point questions that it's impossible that he's just mistaken and purely innocent in his bullshit. All he's doing is aggrevating users actually interesting in robotics, since he's obviously not making the damn robot.
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Anon12/03/25, 08:06No.2961719
I just tested the positive high-side switch portion of the motor controller and everything seems to be working as intended. The section including all parts involved is circled in a bold blue line to indicate the portion I just tested successfully.One issue I'm having though is that the drain of the A09T attaches to the 100ohm resistor tightly and is a weak point that broke off twice now. Hardly any wiggling at all on the arduino input line and ground line leading into the A09T mosfet causes the drain solder attachment to break off. I am wanting to glue it all down onto the mosfet but I'm supposed to tape the heatsink on under all this stuff so I don't think I should glue it down. I need some kind of backing sheet to glue things off onto (where a PCB normally does this job). Which will provide much needed strain relief at all attachment points. I guess I'm learning the hard way why PCBs are used in general. Without a flat backing plate or substrate of some sort the attachment points between components are vulnerable to flex and breakage super easily. This surprises me.
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Anon12/03/25, 08:07No.2961720
To perform the test I used one lab power supply set to 20v and one set to 8.07v and used a 18650 lithium battery as the 4.12v to simulate the arduino output pins. I carefully electrically isolated all the metal lines with packing tape for now to ensure no short circuits and then I connected the lab power supply pins to the correct locations with alligator clips. Finally I connected the 18650 lithium battery 4.12v to simulate the arduino turning on the A09T mosfet - I did this using the two nickel strips for this portion joined to the battery with neodymium magnets. If I had a 3rd power supply I could get 5v off of I'd have done that but I didn't have one in arms reach so the battery it was. The LED came on and I tested the output line to the motor was indeed 8.07v. I then disconnected the + side of the battery and verified the line going to the motor was 0V. It was - although if I kept the multimeter on that line longer I noticed it would creep up to like 3.4v but something similar happened on my last test run and chatgpt said this was like parasitic capacitance involving the multimeter or something and nothing to worry about. The main thing is it would START at 0v when I first connected and then rise up to 3v or w/e over time on the multimeter screen and this behavior was ok last time so meh. We're good I think.Where to go from here then? Well I'd say I make the other (lowside) portion of the half bridge and then test the full half bridge to ensure it's all working. I think then my design is validated enough to move into diy flex pcb for some of these portions that are on the layer that goes onto the main beefy mosfets.
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Anon12/03/25, 11:07No.2961731
This guy's an annoying asshole.