17. Machine design¶
This week we worked on SandMorph, a sand art machine which draws patterns on sand.
Since I am the only student in my lab my Instructors helped me out.
For our application we are using a 2-axis timing belt mechanism that use cartesian cordinates to plot across a bed of sand
The design which was designed initially was for HDPE but was changed for acrylic sheet of 4mm so that it could be sturdier.
There were a few parts which were 3D Printed. The printed parts were brackets to hold the bearings.
For this project we keep it simple by using an Arduino Uno to control 2*NEMA 17 stepper motors. The motors will be connected to a shield that is specially designed for running grbl code. Each motor requires a motor driver(A4988) individually.
A4988 stepper motor driver
CNC GRBL SHIELD
NEMA 17 Stepper motor