Planet Arduino

It isn’t uncommon to see a robot hand-controlled with a glove to mimic a user’s motion. [All Parts Combined] has a different method. Using a Leap Motion controller, he can record hand motions with no glove and then play them back to the robot hand at will. You can see the project in the video, below.

The project seems straightforward enough, but apparently, the Leap documentation isn’t the best. Since he worked it out, though, you might find the code useful.

An 8266 runs everything, although you could probably get by with less. The Leap provides more data than the hand has servos, so there was a bit of algorithm development.

We picked up a few tips about building flexible fingers using heated vinyl tubing. Never know when that’s going to come in handy — no pun intended. The cardboard construction isn’t going to be pretty, but a glove cover works well. You could probably 3D print something, too.

The Unity app will drive the hand live or can playback one of the five recorded routines. You can see how the record and playback work on the video.

This reminded us of another robot hand project, this one 3D printed. We’ve seen more traditional robot arms moving with a Leap before, too.

It isn’t uncommon to see a robot hand-controlled with a glove to mimic a user’s motion. [All Parts Combined] has a different method. Using a Leap Motion controller, he can record hand motions with no glove and then play them back to the robot hand at will. You can see the project in the video, below.

The project seems straightforward enough, but apparently, the Leap documentation isn’t the best. Since he worked it out, though, you might find the code useful.

An 8266 runs everything, although you could probably get by with less. The Leap provides more data than the hand has servos, so there was a bit of algorithm development.

We picked up a few tips about building flexible fingers using heated vinyl tubing. Never know when that’s going to come in handy — no pun intended. The cardboard construction isn’t going to be pretty, but a glove cover works well. You could probably 3D print something, too.

The Unity app will drive the hand live or can playback one of the five recorded routines. You can see how the record and playback work on the video.

This reminded us of another robot hand project, this one 3D printed. We’ve seen more traditional robot arms moving with a Leap before, too.

[Miller] wanted to practice a bit with some wireless modules and wound up creating a robotic hand he could teleoperate with the help of a haptic glove. It lookes highly reproducible, as you can see the video, below the break.

The glove uses an Arduino’s analog to digital converter to read some flex sensors. Commercial flex sensors are pretty expensive, so he experimented with some homemade sensors. The ones with tin foil and graphite didn’t work well, but using some bent can metal worked better despite not having good resolution.

The wireless communications set up was pretty easy thanks to the NRF24L01 modules. The hard part was sewing the flex sensors into the glove. We thought some of the circuitry looked precarious on the glove, too.

For the robot hand, he used balsa wood and hinges for each joint. Flexible thread provided the return power like a spring. The hand was surprisingly artistic in a primitive sort of way.

While this is a cool demo, the hand isn’t likely to be practical for much as it is. Nerve impulses are better but harder. The glove reminded us a little of one we’d seen before.

How do you make a robot hand? If you are [Robimek], you start with some plastic spiral tubing, some servo motors, and some fishing line. Oh, and you also need an old glove.

The spiral tubing (or pipe, if you prefer) is cut in a hand-like shape and fused together with adhesive. The knuckle joints are cut out to allow the tubing to flex at that point. The fishing line connects the fingertips to the servo motors.

The project uses an Arduino to drive the servos, although you could do the job with any microcontroller. Winding up the fishing line contracts the associated finger. Reeling it out lets the springy plastic pipe pull back to its original position.The glove covers the pipes and adds a realistic look to the hand.

Granted, this is probably more practical as a display piece than a working hand. We’d like to put it in our next Halloween project. We’ve seen some simple hand builds before, but the glove is a nice touch. For some reason, many of our robot hand projects like to make rude gestures. You can see a video of [Robimek]’s hand working below.

Filed under: Arduino Hacks, robots hacks

A reddit user asked for workouts for his brother, who lost his hands. Another user responded with a 3D printed prosthetic.

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The post Open Source Prosthetic Hands Focus on Function and Personality appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.

Marco Pucci shared on our Facebook Page a link to the tutorial he made for a low-cost Robotic Hand able to mirror the movement of our own hand. He created it  in the laboratory of new technology of Accademia di Belle Arti di Brera (“Academy of fine arts of Brera”), a state-run public academy in Milan, Italy.

The hand works with flex sensors attached to the glove’s fingers, they are analysed by an Arduino which then moves servo motors connected to threads attached to the robotic hand.

You can follow the tutorial (in italian, but you can use google translate) on this page www.marcopucci.it/arduino/ , download a zip with all the sketches, and watch a demo video below:

 

Gabri295 published on Instructable a tutorial for a project created during his last year of high school.  It’s  an artificial hand controlled by a glove with 5 flex sensors and Arduino Lilypad . The artificial hand reproduces the movements of the hand wearing the glove.

The components you need to control glove are:
• an elastic glove;
• Lilypad Arduino board (there are different versions, which usually only have 4 analog inputs, so pay attention and buy the one in the image);
• Shield to connect the Xbee module;
• 5 Flex sensors;
• 5 resistors: 47 K?;
• battery pack with 3×1.5 V batteries (Lilypad can be powered from 2.7 to 5.5 V, so 4.5 V it’s ok);
• LilyPad FTDI adapter (quite optional).

The materials needed for the robotic hand are:

• a steel structure for the palm of the hand and wood for the fingers;
• Arduino UNO board;
• 5 servomotors;
• to connect the servomotors I used the Robot_Shield from FuturaElettronica, which has also a switching regulator to power the entire circuit, but you can use any shield made for that;
• Shield to connect the XBee module (I made an horrible one, but it’s economic and I needed to make it small because of the size of the Robot_Shield, you can buy even XBee shields which have also pins to connect the servomotors);
• fishing wires;
• 9 V Battery.

Below you can take a look at the schematic and then follow the steps to make one yourself!

 

 

Aaron Thomen’s DIY $200 Robotic Hand looks and works great without costing a lot of money! It consists of servo-controlled and spring-loaded fingers delicate enough to pick up small objects. In another video Aaron shows how to build it. Going to Maker Faire Bay Area? Aaron will be there showing […]

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Instructables user aaronthomen posted a couple of videos about his ingenious robotic hand and a controller he designed and built for less than $200.  The first video shows the hand in action and the  second one explains how he made it.