12. Machine building¶
This week revolved around machine building
‘Pilvi’ router project¶
For machine buildin, we didn’t do an individual project, instead, we combined our forces in a significant group assignment.
Our group set out to build a 2D plotter, a machine that can draw 2D shapes with a pen using gcode.
You can find our group repo here
As I was vacationing in the beginning of the week, I joined the project a bit late. The rest of the group have been really busy, constructing the plotter and setting up the microcontroller.
For my part, I designed and built XY-limit switches for the plotter. In this way, the plotter could be consistently zeroed to a 0,0 position, making operation much more convenient and safe.
My system consists of two microswitches, their mounts and cabling. The first step was finding microswitches. The ones I found are really large, but will serve their purpose.
I identified some possible placement points for limit switches, and sketched out approximate dimensions for holders. I then CADded and lser cut them. Quite sdtraight forward process all in all
The switches have a common ground and individual VCC lines to the grbl shield. Wiring is done with headers and breadboard wires.
The X-limit switch brackets needed to be trimmed a bit, easy job with pliers!