ckochandClaude Opus 5.5
58129c2b59
BUILD.md walks through the whole build: what to buy (parts and screws), the v3 print list with materials and supports, case, electronics (microstep jumpers, driver current), centre, the arm on the bench, hub and slip ring, wiring to the CNC shield, software setup and a first run without sand, then floor, magnet height, sand and glass, plus troubleshooting. Also adds the 608 fit test to print/v3 so the v3 folder is complete. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sandTable
A 12" kinetic sand table that draws patterns in sand. A steel ball rolls under glass, pulled by a magnet on a polar arm underneath. The case is about 12.5" across and 5" tall. The parts are 3D-printed for a Bambu P1S and designed in SolidCraft.
Building one? Start with BUILD.md: parts to buy, what to print, assembly in order, wiring, the first run and troubleshooting.
sand-table-v3.solidcraft: the printable design (latest). Bodies namedREF_*are bought parts, modeled for fit only.sand-table-v2.solidcraftis the previous version.print/v3/: STL files for every printed part of the v3 build. Use this set. Print the two fit tests (00,00b) first.print/README.mdhas the parts list, print notes and assembly order; the older folders are kept for reference.software/: the pattern player. Start it withpython3 -m sandtable webfor a web page with a library of designs; it drives the table from a computer over USB and erases between patterns. Seesoftware/README.md.pcb/: an optional custom controller board (ESP32 + 2× DRV8825, FluidNC) that fits the Uno standoffs, with PCBWay order files. Seepcb/README.md.sand-table-v2-assembly.step: the v2 assembly, for viewing in any CAD tool.design-notes.md: how it works, dimensions, parts to buy, hardware list and print settings.sand-table-v1.solidcraft,mechanism-mockups.solidcraft: earlier layout and mechanism studies.