X1Plus Expander

This repository contains hardware development files for the X1Plus Expander,
available-ish for purchase at Crowd
Supply.
Printer-side software to interface with these boards lives in the X1Plus
repository.

If you have just purchased an Expander, you probably want to read the
getting started guide!

Each part has its own directory in this repository. Part numbers always
begin with "X1P", are followed by three digits to identify the part, and
have a three-character revision number: a letter to identify
form/fit/function-incompatible revisions, and two digits to identify
FFF-compatible revisions. Put together, a part and revision number looks
like "X1P-002-C02", to identify the an X1Plus Expansion Board mainboard, the
third FFF-incompatible revision, and the second FFF-compatible revision of
the X1P-002-C family.

This repository contains the following parts. (Descriptions below may not
be representative of marketing names.)

• X1P-001: wiring harness to connect X1P-002 to the printer
• X1P-002: X1Plus Expander mainboard
• X1P-003: manufacturing test harness for X1P-002
• X1P-004: LED strip 3.3V->5V level shifter plugin
• X1P-005: Andon board plugin
• X1P-006: 2.5mm camera shutter release plugin
• X1P-100 is a part number reserved for a bundle assembly of X1P-001,
  X1P-002, and X1P-800.
• X1P-800: plastics for X1P-002

Ideally, each known version of each of these parts has its own git tag and
GitHub release with manufacturing data. (Ideally.)

Also in this repository:

• utils/: software useful in manufacturing or bringup of X1P-*
  hardware
• doc/: documentation associated with X1P-* hardware
• fw/: firmware for the RP2040 on X1P-002-C series boards