An Open Source project to help people with less strength in arms and hands

Work in progress!

Corrected some geometry in the right hand base and also added a left hand base!

All 3D STL files are scaled properly now!

I have added 3D printable snap lock pins for the Exo Hand, if you wish to use instead of the screw bolts and nuts! See in the link below! Thank you!

https://github.com/comancheace/Exo-Arm/blob/main/3D%20files%20Hand%20STL/1_finger_snap_lock_pins.stl

Please see the images for reference for assembly of the project!

Blender 3.3.0 Screenshot showing 3D printable snap lock pins for the Exo Hand

Servo motors joints and links

https://github.com/comancheace/Exo-Arm/tree/main/images

Project still in development!

List of materials:

• For the Exo Hand:

  • 5 Flex Sensors Schematics: https://www.aliexpress.com/item/1005001446763375.html
  
  • 5 x 10K Resistors
  • ~1 Meter of 2mm steel wire
  • Jumper Wires
  • ~20 x Cable ties 3.6 x 200 mm
  • Arduino Uno
  • Bike Glove
  • 3D Printing Filament PLA
  • 5 x servo motors SG90 https://amzn.eu/d/8dq6vwL
  

  For each finger (5X):

  • 4 x M3 10 screw bolt
  • 1 x M3 18 screw bolt
  • 1 x M3 20 screw bolt
  • 8 x M3 nuts plastic

  https://www.aliexpress.com/item/1005004330711619.html

• For the Exo Arm:

  • Arduino Uno

  • 3D Printing Filament PLA

  • Jumper Wires

  • ~25 x Cable ties 3.6 x 200 mm

  • 2 x potenciometer Schematics: Nice tutorial here! https://www.instructables.com/2-Potentiometers-2-Servos-Controlled-Motion-With-A/

  • 2 x servo motor 35 Kg/cm https://amzn.eu/d/cAlyL9d

Please make this project at your own risk!

Work in progress!

It is in a early stage of development!

All images outside the project are properly linked to the author for copyrights!

All 3D models were modeled in Blender 3.3.0!

https://www.blender.org/

Thank you!

Kind regards!

Peace!