I included a rendering so you can see how the parts fit together. To be honest though this was a junk pile build using what I had on hand not what was ideal. I had everything but the control board and slip ring in the misc parts bin.
Hardware:
Length of 2040 extrusion
Slip Ring (min 8 wires more if you want endstop)
3 V-Groove Bearings
2 Pullies (GT2 5mm)
GT2 Belt 5mm - Get about 10 inches more than you need for treads on wheels.
Nema 17 for X
Nema 14 for Y
2 Magnets from old hdd.
Misc Cap head screws 2-5mm with nuts cant remember which go where.
2040 Nut holders found on thingiverse,
2 wall anchors (The cheapo ones you normally toss when you get something to hang) - theses are perfect for attaching to end of the 2040
Tried to achieve a theta rho table inspired by Roman Ratnaweera’s sandtrail one.
I have low python skills. Jeffeb3, do you still have a complete python conversion code with feedrate integrated?
Thanks by advance.
The first SCARA table I saw had need for a conversion. There is a link somewhere here for a python script in an online python interpreter to covert from theta rho to gcode assuming the motors are X and Y for Shoulder and Elbow.
But that became so popular that it is integrated into sandify.
Here is where I put that python code. Your output is a little different. But I would still do this to import a thr file and outout gcode. Thr from sandify already solves a lot of issues you’ll deal with doing it any other way: