Development build (untested)

Warning

Untested development build. These files are generated automatically from the latest commit on main and have not been built or tested as hardware. They may contain unverified or unfinished changes. Don't order boards from them unless you're prepared for that; use a versioned release instead.

Generated from commit 75f1d89 by the Hardware workflow.

v0.1.0

First public release of this open-source capacitive linear encoder.

What's in this release

• Sensor PCB: 3D STEP, fabrication files, assembly files, BOM and schematic.
  • Not yet tested: I²C.
• Reflector PCB: 3D STEP fabrication files for a smaller testing-focused variant.
• 3D models: STEP and STL files for test fixturing.
• Firmware: build from source at this tag.

Status

Measured accuracy is about 40 µm at constant room temperature, against a Mitutoyo 543-793B-12 indicator. See Practical Accuracy Measurements.

This is a documented reference design from a personal project, not a supported product. See Status and Limitations before building one.

You'll need

KiCad 9 (to edit), PlatformIO, an SWD probe with a Tag-Connect TC2030 cable, a USB-serial adapter, and a 3D printer.

Get involved

Feedback and help are welcome, especially on the mechanical design. See CONTRIBUTING.md.

Licenses

Hardware: CERN-OHL-P-2.0 · Software and docs: MIT