Hi /diy/, i want to build a robotic arm, the thing is just that i don't know how to do it, can you tell me what things i need to know to build it?
I doubt your parents even own a screwdriver set.
>>1003742
>bumping threads with this /b/ tier shit
Worse than OP
Feeling the need to comment on the fact you don't like his picture. Literal cancer teir shieet right their my nigga
How many degrees of freedom do you want?
If you want it to lift any significant amount or be accurate its going to be mad expensive
>>1003740
What tasks do you want your robotic arm to do.
How far must it reach
How much must it lift
How much precision does it need
How fast must it move
These are all things that determine the design characteristics.
First off you need to give up. Making a robotic arm like that is fucking impossible for an amateur like you. A crazy amount of work goes into making professional robot arms.
Ok now that is over with, you can make a shitty version of the above using hobby servos. Don't expect to lift much or have much precision.
>>1003753
>How far must it reach
around
>How much must it lift
dick &/or balls
>How much precision does it need
not much
>How fast must it move
2-3hz
>>1003751
around 4 degrees of freedom, lift is not essential, but it would great to add
>>1003775
That's a pretty tough set of requirements. You'd be hard pressed to achieve 2-3Hz and support that much load.
>>1003753
Just want to lift some things, but not too heavy, around 15-20 grams of weight
>>1003770
i know, just want to build it to begin to know how it works and the math behind it
>>1003740
So what happened to the sexbotanon from maybe a year ago?
Is he kill?
can't get any easier than this. all you need is:
>some 3d printed parts (if you don't have printer, use local hackerspace or even library)
>nuts and bolts
>some servos
>servo controller
http://www.instructables.com/id/EEZYbotARM/
>>1003778
>lift is not essential
Problem with an arm is that it needs to be able to lift itself, at a minimum. The most basic concept you need to understand is: torque.
>>1003783
Yeah, really want to know as well.
I can images his skeleton will be found in a decade or so with this robotic arm still thrusting a dildo in and out of his pelvis
>>1003783
He read the /diy/ bingo and decided to not post anymore.
>>1003782
Build a 3d printer first. They are essentially robotic arms. They can also build the parts you'll need for a robotic arm. They use stepper motors, which can be used to build a robotic arm. They use arduino based controls like robotic arms. Are you starting to get it?
There's tons of kits online if you want to skip the printer part. I bought a budget tier printer for like 300 shipped and it is pretty fucking cool. Definitely taught me alot about stepper control.
>>1003815
It's the way he would of wanted to go...
RIP sexbotanon
>>1003789
thank you! C:
>>1003842
>>1003783
>>1003815
>>1003840
my shit came back from anodizing last week. got almost all my robot shitdone.
looks off the fuckkin hook
>>1004327
Congrats brother, on finding love in the technological age
>>1003751
>How many degrees of freedom do you want?
Just fuck my shit up.
>>1004815
fortunately, actuators do get cheaper as you buy more
>>1004327
>not mounting a black dick on it
>>1003740
http://store.hackaday.com/products/mearm-pocket-sized-robot-arm
Here you go. Buy this kit, build it and post pictures faggot.
>>1004833
Problem with more actuators is more length.
The longer it is, the more sway there is towards the effector.
>>1005161
Just add more in parallel
>>1005101
the chinese make em' cheaper:
http://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20160607115532&SearchText=robot+arm
Design & build one from scratch or you're not building shit, you're just putting a kit together or following instructions.
>>1005247
What are all the little holes for?
>>1005266
holes on the sides of the servos are to just secure the servos. other holes in the middle of the supports are for zip ties/spacers/screws+bolts to secure the parallels
>>1005170
It's time for the next evolution in sex robots.
Look up "uArm" in google.
>>1003775
>handling dick and balls
>not much precision needed
Good thing you weren't gonna have kids in the first place.
>>1005291
>that looks milled
>they milled out a block of aluminium big enough to make an engine just to have those thin cross braces
>muh rabid brototyping
>>1005777
They could have cast that shape and then milled the finish.
>>1005291
This is what people in the 70s thought a sex robot would be like
NSFW
https://www.youtube.com/watch?v=v8XfpKip2g4
Here OP: this might give you some inspiriation. https://m.youtube.com/watch?v=E2evC2xTNWg
I think you should consider using hydraulics instead of servos if you want to stay cheap.
>>1005897
I wouldn't take anything from The Holy Mountain as "what people thought" even people in the 70s would think that movie was dumb as shit.
>>1005777
>thinking you're smarter than the R&D team at NASA
>>1005922
>not knowing that NASA is a worldwide conspiracy pushed by the Ball Earth pushers
Educate yourself
https://www.youtube.com/watch?v=WLE-ocDoXrs
>>1005777
>>they milled out a block of aluminium big enough to make an engine just to have those thin cross braces
if you're just making one thing--or a few of a thing--milling down a solid block is faster and cheaper
>>1005921
That movie honestly wasnt even that surreal even though people love to talk about it.
If you want to get started with basics, I imagine getting this little robot arm kit would be a good start
>Build said kit, using it to try and develop an understanding of how robotic arms in general work
>Next step: rewire said arm into an Arduino/Pi/whatever and control it with said board
>Upscale that shit nigga
Gotta learn to walk before running and whatnot
>>1005777
Alum is cheap man
>>1005777
You ain't seen nothing yet. You need lightweight sometimes, this is why muh rabid prototyping is pretty exciting. Cuz then we can make stuff lile that without milling down a bunch of stuff
>>1005898
>I think you should consider using hydraulics instead of servos if you want to stay cheap.
Hahhahhahaha, no. Hydraulics are pretty expensive. Servos you can buy cheap from china.
Although I would like to point out that you can build/buy hobby scale hydraulics. I really want to see someone diy hydraulic robot, even though it is a bad idea.
>>1006026
Oh god those arms are shitty. They don't have any position sensing and it is hard to add it to them.
>>1006150
>Oh god those arms are shitty.
Yes, yes they are. A decent learning experience though, at least on the mechanical side of things
>>1006194
honestly, the only useful thing learnable from these toys are practice driving robots and learning the joint functions
otherwise, these robots are nothing like a real one, mechanically
and not scale-able because the size/weight of a material has a exponential growth curve
at any rate, op you will not make an aticulated 6 axis robot that will be able to lift the required payload (no matter how small) at the speed in which you would like
omg hrydraulic arm is this 1960
you can buy real robots for cheap enough now a days stop being babies
>>1006318
Nigga I don't even think we had robots in the 1960s.
>>exponential
CUBIC, the scaling is CUBIC
