Small Humanoid Hands

Question

Can anyone find some robotic hands like on this robot: https://www.ebay.com/itm/Humanoid-robot-biped-robot-walking-robot-19-degrees-of-freedom-movable-fing-/271279660425?pt=Radio_Control_Parts_Accessories&hash=item3f29871d89

Also, I already know about the Melissa hands. I'm looking for hands that won't cost me, well, an arm and a leg.

Robot Doc · Answer

Have you done a Google search for Robotic hand ? An ebay search also shows many options.

Sudo the Banned · Answer

I have, and I can't seem to find that hand. I'm going to try to fit it on my already crammed robot, and it needs to be that small.

Sudo the Banned · Answer

Any links?

Sudo the Banned · Answer

https://www.plasticpals.com/?p=29805 Is the only small humanoid hand kit I can find, and it's not made anymore. If you have any idea where I can get a 50-100$ micro hand, PLEASE tell me! Thanks!

Nomad 6R · Answer

hi can this work for you. hands

Sudo the Banned · Answer

As I've said before, the melissa hands are too much for me to afford. I'm looking for a cheaper option like on the 500$ robot that i've linked. Should I just make my own hands?

Nomad 6R · Answer

must it be a real hand .or is gripper also good.

Sudo the Banned · Answer

Yes, I would like them to be like the hands seen here: https://www.instructables.com/id/Simple-Animatronics-robotic-hand/ Only much smaller, to fit on a robot and controlled with a single servo. The humanoid is going to be picking up objects such as balls, and a 5-digit dexterous hand would make it much easier for the robot.

Nomad 6R · Answer

maybe you look on robohands

Sudo the Banned · Answer

Nope, nothing. Does anyone have any idea what these small little single servo hands are called?

rgordon · Answer

@Cupcakehat Here is a site where a guy made his own grippers patterned after the Melissa hands for $50. link Here is one from Lynxmotion

Sudo the Banned · Answer

Do you think I could 3D print a pair of hands like that? Also, you gave me exactly what I was looking for- THANK YOU!

rgordon · Answer

@Cupcakehat I don't have a 3D printer but I'm searching to see if anyone else has done this and has posted their plans. Also you may want to look and see if you could use very small roller chain to create the fingers. That might make creating them a lot easier. roller chain web site

Robot Doc · Answer

Here's  a URL to a 3D printer version using rubber bands and fishing line to control the fingers. It could be converted to a servo controlled hand.

rgordon · Answer

Here is a link that shows others are making them. Although, these are not for sale, it could give others the ideas needed to print them. Also searching with Google Images may give some inspiration. link link

Sudo the Banned · Answer

Is there any way you could shrink down the model for that 3d printed makerbot hand and make it fairly small? I want to make it small and light, it has to rotate on a microservo that serves as a wrist.

Robot Doc · Answer

Yes, you can control the size of each item when you convert the stl to a sliced x3g file for printing. You can print at 100% of the original and if that is to large then you can start choosing smaller versions of the file to slice and print.

Sudo the Banned · Answer

Thanks for telling me. Does anyone know of a place that can 3D print near the wyoming area, or can someone print these for me? I may not be getting a 3D printer, it's a pricey investment. Also, I'm going to use up all 24 digital servo ports. Could I use 2 analog servos to open/close the hands?

Robot Doc · Answer

The original designer of the hand I posted info about used rubber bands between each (knuckle) to hold the hand open and then connected fishing line to each finger to pull the hand closed. It may be possible to connect a single servo to turn and pull all the fishing lines at once. Torque would be an issue as well as how strong the rubber bands are that hold the hand (fingers) open.

Sudo the Banned · Answer

What i'm going to do is what the melissa hand does- it opens/closes using a single servo. I'm going to add two hands, so I was wondering if I could use a analog servo for each hand. Thanks!

Sudo the Banned

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