8. Open Source Hardware - From Fibers to Fabric¶
For this week I would like to build a 3D wire bender. The aim of this will be to create a machine that can take any 3D curve produced in a CAD program and build in in reality using a wire.
There is an open source design which I will aim to copy initially, modifiying the parts to fit the hardware (bearings etc..) I have available here. I will then see what modifications will need to be made mechanically before moving onto the coding.
https://www.youtube.com/watch?v=ve1zzDXlJoA
The DI Wire bender
https://www.youtube.com/watch?v=HPQbKTJPsU4
Arduino 3D wire bender
There are a couple designs available alreay. I aim to replicate the second, arduino wire bender. I will use and Arduino Mega and a RAMPS board as they are pieces of kit I am familiar with and I have written code for this before on a previous project (Pegnuino drawing machine http://fab.academany.org/2018/labs/fablabbrighton/penguino.html). The aim would be to create an interface with grasshopper that would calculate the code to bend a wire from a curve created or imported into rhino.
Issues: nema17 stepper not able to rotate the end axis end axis too heavy use nema 17 instead of 23 on end axis (is 23 needed) learn fusion 360 or solidworks so i can calculate the torque values and find required gear ratio rather than trial and error. need stiffer pipe rethink mechanics entirely.