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Mechanics and Construction / Re: quad spider design
« Last post by rouncer on May 17, 2018, 01:38:29 AM »

Mechanics and Construction / Re: quad spider design
« Last post by rouncer on May 17, 2018, 12:38:45 AM »
Made an important adjustment to stop more self collisions and it fattened the legs alot,  not sure what i think of it now.
the joint is so bloody complicated,   how did it get to this!?!?!?

Also, my friend gave me an idea,  put it together with plastic plumbers pipe and plastic weld it together,    I saw this guy make a mannequin using it and probably might be a good alternative.

Misc / Arduino Robot Hand
« Last post by jillobo on May 16, 2018, 02:03:00 PM »

I have created a hand similar to his, however, I am currently on the stage of getting the string system to work with the servos. Do you guys know where exactly to anchor the strings on the fingers to get the hand to contract/open?

Thanks :)
Mechanics and Construction / Re: My Advanced Realistic Humanoid Robot Project
« Last post by jillobo on May 16, 2018, 12:09:06 PM »
Hey artyrobot1! Just came across your project and thought it is very cool! How is shaping up in 2018?
Mechanics and Construction / quad spider design
« Last post by rouncer on May 15, 2018, 07:53:30 AM »
Heres my new design for my quad spider.  the cylinders coming out of his joints are electric motors.
Im having self collision problems, but this one is better than the last one.
I should be able to roll the whole thing, except the perpendicular connections i was thinking to get started i could just lash them like a boy scout! :)

Robot Videos / Re: Quadruped robot - Quadbot17
« Last post by rouncer on May 13, 2018, 01:24:34 PM »
thats really cool.

my friend likes the colour alot because he has treble and bass cleff tattoos in the same shade of purple.  LOL. :)

What are your future plans for this body - or brain youve got?
Mechanics and Construction / rollable joint
« Last post by rouncer on May 13, 2018, 01:08:32 PM »

I plan on making the cylinders by rolling thin plastic sheet,   and the perpendicular attachments from hold roll to spin roll i think im going to try square lashing with nylon fishing line.

The weakpoint of the joint is probably the soldered on motor extender,  so maybe i should fuse screws from the side and it might last longer.

Im going to give this one a good pull test!   hopefully its mechanically hard enough,  then its just down to picking the right dc motors and batteries, so it can lift itself, and hopefully the potentiometre doesnt burn out too.  if i increase the battery power, im naturally going to have to modify the whole thing,  the potentiometres could stay but i have to limit the angle by locking it off the edge of the resistor,  which would just zap into smoke under too much watts.

And...  electronicly...   im having trouble making the circuit that positions the dofs using the potentiometre and a target amount of current, im stuck using the ratio, i cant get the current difference because it just wastes too much power,  and im having a hard time getting both directions to work back and forth, without them screwing each other up...

but,  im progressing.  :)
Misc / New - Open Source Robot Platform
« Last post by gBot on May 11, 2018, 11:37:10 PM »
Hello Robotics enthusiasts, my name is Robert and my son Andrew and I have put together an open source mobile platform from off the shelve components. We also combined the leading technologies in a software framework with the latest machine vision and machine learning capabilities. We aimed the end product for retrieving golf balls at driving ranges, however other types of applications can be adapted.


Thanks for taking a look,


Robot Videos / Quadruped robot - Quadbot17
« Last post by m3atsauc3 on May 10, 2018, 01:33:16 PM »
Hi all,

This is my first post here!
I'd like to share some videos of a robot I have been working on for the past year:

If you want to find out more, please visit my project log and blog:
Cognitive Dissonance
Misc / Re: Tech Tip- Measurement of speed
« Last post by rouncer on May 09, 2018, 10:07:30 PM »
These servos sound like crap, id rather use a dc motor - then i can play with the battery source as well as the motor- and get even quicker results, and not fork out for consumer tapered goods.  :P
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