As robotic hands become increasingly dexterous and responsive, one startup, Open Bionics, has broken away from the norm to create an affordable bionic hand that retails for only £1,199 (~$1,600): the Brunel Hand 2.0.
This lightweight and precise robotic hand has 4 degrees of articulation and 9 degrees of freedom. It’s the second bionic hand from Open Bionics after the Ada hand and is produced using an open source design.
Unlike its predecessor, the Brunel Hand 2.0 comes with improvements that include a custom control circuit board, a stable pinch grip, and integrated finger friction. This robot hand can be programmed using the Arduino programming environment and is great for anyone undertaking projects requiring robotic hands.
Open Bionics produces open source prosthetic limbs and has received a Guinness World Record for the Deus Ex prosthetic limb: the first prosthetic limb based on a video game. The company is using 3D printing technology to print (in parts) its low-cost robotic hands and is confident the bionics can perform the same functions as other expensive and advanced prosthetics.
Here’s a complete list of everything you’ll need to create the Brunel Hand 2.0:
You’re also going to need a torque screwdriver (with a flat head and Torx T6), long nose pliers, soldering iron, a screwdriver, and a scalpel.
There are tons of STL files for this project, and it’s crucial to note that the right-hand components are marked “RH” while those for the left hand are marked “LH“.
Most of the parts will be printed using a PLA filament except for the following:
These parts can be printed using cheetah filament on the BQ Witbox (resolution 0.25 mm).
Note: The cheetah filament can be printed using several desktop 3D printers (including the Ultimaker 2). Therefore, it may not be necessary to use two printers for this project.
Open Bionics cast urethane finger grips on their fingers using their in-house molds. The molds are not available for now, but Open Bionics has promised to make them open source soon.
You should end up with the following printed parts:
Here’s an overview of the steps you’ll need to take:
And there you have it: your very own Brunel Hand 2.0!
License: The text of "Weekend Project: Robotic Hand" by All3DP is licensed under a Creative Commons Attribution 4.0 International License.
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