# Walkie One R3.7 — Why the connected prototype should fit

Narration: local synthetic voice (Samantha). Actual CAD views and owner photographs. Physical testing is pending.

## 00:00:00 — Same case. A connected fit.

This is the revised Walkie One, R three point seven. The bare case remains seventy-eight by one hundred fifty by twenty-four millimeters, with the original openings, seam, and visible controls. The goal is a practical fit with every connection installed, and fewer small pieces to assemble.

Evidence: Verification/SUMMARY.md, Documents/01_Component_Review.md

## 00:00:18 — The last print exposed the missing space

Your twenty-eight point four build showed the main problem: the board appeared to fit until the cables were plugged in. Each plug adds a body and a wire exit. The wires also need room to turn, and soldered joints need insulation. This revision explicitly includes that occupied space, instead of treating the circuit board alone as the fit requirement.

Evidence: User report and owner photographs, Documents/03_Harness_Instructions.md

## 00:00:38 — Every connection shares the same space

The assembly now includes the battery, blue microphone, speaker, four-button harness, indicator, antenna, and U S B connection together. The orange geometry shows modeled plugs, wires, and joints. Separate clearance volumes allow some room for dressing the real wires. That matters because solving just one connector can otherwise move the interference into another part of the device.

Evidence: Verification/SUMMARY.md, Documents/03_Harness_Instructions.md

## 00:01:02 — Make space by changing the internal layout

The circuit board is shifted and tilted within the original enclosure. Its U S B connection is checked through the existing opening. Four paired supports locate the board, replacing eleven separately handled board pads. A broader edge stop takes the cable insertion load. The printed seats establish the board position, so assembly does not depend on guessing its angle.

Evidence: Documents/01_Component_Review.md, Documents/04_Assembly_and_Qualification.md

## 00:01:24 — The cable construction is part of the fix

There is an important requirement: the microphone uses the specified side-exit J S T cable, with a nine-millimeter catalog mated envelope. The previous tall microphone plug arrangement is not the construction checked here. Speaker, button, and L E D harnesses also use the documented thin, shortened wires. These are cable-side changes. The main circuit board is unchanged, and every finished harness still needs a continuity check.

Evidence: Documents/03_Harness_Instructions.md

## 00:01:51 — Keep the battery intact and give its leads room

The battery connects directly to the board. The custom adapter, cover, grommet, and associated fixings are removed. The design keeps the agreed maximum battery body, low locating supports, and broad removable keepers without clamping the pouch. A central bay holds the intact factory lead excess. The actual protected wire exit and slack still need to dress naturally during the first build.

Evidence: Documents/01_Component_Review.md, Documents/03_Harness_Instructions.md

## 00:02:15 — Fewer little pieces to handle

Compared with twenty-eight point four, printed part identities drop from twenty-eight to twenty-one, and screws from thirty-two to twenty-two. Three loose switch cradles become supported shell features. Two stationary volume retainers become one removable rail, while each button keeps independent movement. The separate antenna clamps are also removed, using the antenna's factory adhesive on its insulating carrier.

Evidence: Documents/01_Component_Review.md

## 00:02:40 — Simplification must also protect the controls

The durability improvements are retained: broad volume sliders, wider roots, removable capture, and supported stops. The push-to-talk guides stay short and separate because a joining bridge would obstruct the wiring. Integrated switch seats accept already-wired switches through open access. The aim is to spread pressing and tightening loads into supported material, and avoid flexing delicate printed features during assembly.

Evidence: Documents/01_Component_Review.md, Documents/06_Structural_Screen.md

## 00:03:05 — The neighboring parts were checked too

The speaker frame rotates around its unchanged acoustic center. Two short keepers and coordinated screw lengths retain it without loading the diaphragm. The microphone keeper has an open exit for its joints and jumper. The L E D moves beside the board and uses a new clear light guide to reach the original lens. That guide requires optical material and finishing. An opaque print can only check its fit.

Evidence: Documents/01_Component_Review.md, Documents/04_Assembly_and_Qualification.md

## 00:03:29 — Why there is a stronger reason to expect a fit

The reason for confidence is the combination of a connected layout and explicit checks of the space it occupies. The modeled assembly has no unresolved interference. The checks include wider wire allowances, installed pads, sampled control movement, edge presses, and screwdriver access. All twenty-one print meshes are closed and matched to the C A D, and the native file was reopened. These results establish digital consistency; they do not prove printed strength or real-world cable fit.

Evidence: Verification/SUMMARY.md, Verification/FINAL_VERIFICATION_SUMMARY.json

## 00:03:58 — The next build tests the remaining assumptions

For the next build, install every connection together and make sure the case seats fully by hand before tightening any closure screw. Check the real wire dressing, U S B cable, and every control with the case closed. Then verify sound, microphone, indicator, and radio operation. Complete ten assembly and service cycles, and a thousand actuations of each control, inspecting for cracks, binding, and pinched wires. This is a better-supported prototype; Golden status stays unchanged until physical testing passes.

Evidence: Documents/04_Assembly_and_Qualification.md, Verification/SUMMARY.md