Document Revision 1 direct-drive CAD baseline

HARDWARE.md

@@ -6,9 +6,13 @@ The hardware photographs in [`Part Numbers:Views/`](<Part Numbers:Views/>) are t
 visual authority; this file is an index, not a substitute for inspection.
 
 **Verified Hardware** is owned, photographed, measured, or electrically confirmed.
-**Design Intent** is conceptual Fusion guidance only; final placement is determined
-during CAD. The [reference architecture](docs/hardware/reference-architecture.md)
-keeps those categories separate.
+**Design Intent** fixes the Revision-1 subsystem architecture while leaving the exact
+layout to Fusion. Revision 1 is an open desktop prototype: a centred stationary pan
+motor directly drives a lightweight platform, and the rotating tilt motor directly
+drives the AD8317/AUT carriage. It has no external bearings, separate shafts, couplers,
+slip ring, sealed enclosure, or battery compartment. The
+[reference architecture](docs/hardware/reference-architecture.md) keeps verified facts
+and CAD choices separate.
 
 Read the hardware documentation in this order:
 

Measurements/README.md

@@ -2,9 +2,10 @@
 
 This folder is the **canonical source for every physical dimension in Radiance3D**.
 
-The enclosure has not yet been designed. Measurements support conceptual Fusion work;
-the [reference architecture](../docs/hardware/reference-architecture.md) defines the
-official non-dimensioned placement baseline.
+Revision 1 is an open direct-drive desktop prototype within a 220 × 220 mm maximum
+base. Measurements support its Fusion layout; the
+[reference architecture](../docs/hardware/reference-architecture.md) defines the fixed
+subsystem architecture while Fusion determines placement.
 
 Every number here was measured with a digital caliper on the actual parts in hand and
 is traceable to a photograph in this folder. Hardware, mechanical, assembly, BOM and
@@ -49,6 +50,7 @@ See [`fusion360-parameters.md`](fusion360-parameters.md).
 | BIGTREETECH TMC2209 V1.3 driver (×2) | [`tmc2209-v1.3.md`](tmc2209-v1.3.md) | IMG_5233–5240 |
 | ELEGOO ESP32 devkit (×1) | [`esp32-devkit.md`](esp32-devkit.md) | IMG_5241–5246 |
 | AD8317 EVAL BD (NWDZ V1.0) RF detector | [`ad8317.md`](ad8317.md) | IMG_5257–5262 |
+| ZX-052 V2.0 buck converter (×2) | [`zx052-v2.0.md`](zx052-v2.0.md) | supplemental supplied photographs |
 
 ## CAD handoff
 
@@ -60,39 +62,26 @@ See [`fusion360-parameters.md`](fusion360-parameters.md).
 | [`fusion360-build-order.md`](fusion360-build-order.md) | A step-by-step build order for modeling the pan/tilt prototype in Fusion 360 |
 | [`fusion360-bom-template.md`](fusion360-bom-template.md) | A starter BOM template for the mechanical, electronics, RF, and fastener parts |
 
-## Measurements still needed
+## Remaining provisional interfaces
 
 Full detail, including how to take each one, is in
 [`missing-measurements.md`](missing-measurements.md). Summary:
 
-**Unclear — re-shoot:**
+These do not block the component-envelope layout. Use reversible retention and named
+provisional parameters where a printed feature actually depends on them:
 
-- NEMA 17 face width across flats (decimals unreadable)
-- NEMA 17 shaft diameter (second decimal unreadable)
-- NEMA 17 — one completely unreadable display, and two legible values whose measured
-  feature cannot be identified
-
-**Not measured at all:**
-
-- NEMA 17 mounting-hole spacing and diameter — the largest remaining unknown on the
-  motor; every other motor-mount dimension is now measured
-- NEMA 17 shaft flat length and flat depth
+- NEMA 17 mounting-hole diameter/screw specification and shaft-flat axial length/start
 - TMC2209 heatsink length along the PCB long axis (one reading closes it)
 - TMC2209 PCB thickness, header pitch, header row spacing
 - ESP32 mounting holes and header pin length
-- Bearings — inner diameter, outer diameter, width
-- Shaft couplers — bores, outer diameter, length
 - Fasteners and heat-set inserts — sizes and pilot holes
-- Antenna mount — connector, antenna body, coax diameter and bend radius
-- Limit switches — body, mounting holes, lever, actuation travel
-- LM2596 buck converter — outline, mounting holes, total height
+- Representative interchangeable AUT clearance envelopes
+- ZX-052 total installed height and mounting-hole pattern; use open edge retention
 - AD8317 detector — PCB thickness, mounting holes, shield-can height (outline is
   measured)
 
-Bearings, couplers, fasteners, the antenna mount and the limit switches have no
-measurements at all yet, so no component file has been created for them. Files will be
-added when the parts are measured — empty placeholder files are deliberately not
-created.
+External bearings, separate shafts, couplers, and mandatory limit switches are not
+Revision-1 parts. They do not block CAD and may be considered only as future upgrades.
 
 ## Source photographs
 

Measurements/ad8317.md

@@ -15,9 +15,9 @@ generic dimensions found online.
 - Measured with: digital caliper, IP54, mm mode
 - Units: mm
 
-> [!NOTE]
-> No RF detector is committed to yet. This board is documented because it was
-> measured, not because it is selected.
+> [!IMPORTANT]
+> This owned AD8317 EVAL BD / NWDZ V1.0 is selected for Revision 1. It mounts
+> vertically and moves with the interchangeable direct-SMA AUT.
 
 ## Measured dimensions
 
@@ -66,16 +66,22 @@ axes, well outside this caliper's ~0.05 mm repeatability. Do not model it as squ
 
 - **Board outline:** 36.27 × 35.72 mm. Orient the model so the 36.27 mm axis is the
   one the SMAs leave from.
-- **Important protrusions:** the two SMA connectors, 9.78 mm per side, giving a
-  55.84 mm overall envelope along that axis. They need straight coax exits and must
-  respect the coax bend radius, which is currently provisional.
+- **Important protrusions:** the two SMA connectors, 9.78 mm per side, give a 55.84 mm
+  envelope. Keep both accessible; the AUT threads directly onto its SMA without coax.
 - **Mounting-hole layout:** four plated corner holes are visible in `IMG_5261.HEIC`
   but neither diameter nor spacing has been measured. See
   [`missing-measurements.md`](missing-measurements.md).
+- **Supplemental diagonal readings:** approximately 40.37 mm spans diagonal mounting
+  features, but jaw contacts do not establish hole centres or board dimensions. Do not
+  use it as a mounting pattern. Begin with adjustable edge or strap retention and
+  preserve all four corner-hole regions.
 - **Shield can:** 17.36 mm long, roughly centred on the board. Height above the PCB is
   not measured, so total board height is unknown.
 - **Board thickness:** not measured.
 - **Required print clearance:** any holder should be a removable fit, not an
   interference fit — this board carries RF and should not be stressed.
+- **Structural support:** the PCB is not the direct-drive hub. A compact carriage
+  retains it and a minimally intrusive, preferably nonconductive guide relieves AUT
+  bending load without inserting an RF cable.
 - **Unclear or missing dimensions:** see
   [`missing-measurements.md`](missing-measurements.md).