Project Getting Started

flux

I reviewed the completed research handoffs and checked the live schematic and PCB. This revision is still incomplete and remains on release hold—not an approved battery-powered design.
Completed
  • Preserved the pre-change backup.
  • Recorded your CNHL 3S battery requirements and researched battery monitoring, default-off protection, auxiliary supplies and a purchased motor converter.
  • Documented integration gaps and saved the verified continuation state in the revision handoff.
What remains unresolved
  • Motor power: no battery-protection or high-current motor-power circuit was added. The proposed TRACO converter is not selected or approved: exact-model capability and low-input thermal derating remain unconfirmed. FET/shunt sizing, fuse coordination, current limits, regeneration handling, harness losses and transient/thermal validation are unfinished. The 25–30 A option remains provisional capacity—not continuous demand—and D24V150F5 remains unsuitable for unrestricted 25–30 A service.
  • Face: still disabled. U4’s head-side supply remains unsourced, and EN remains pulled low.
  • C7/C8/C13: still generic capacitors without exact qualified MPNs; effective-capacitance/ESR qualification is unfinished.
  • Integration: firmware compatibility, audio tests, exact harness drawings and mechanical fit remain incomplete. The PCB is still the unapproved 160 × 100 mm placeholder.
  • Checks: the eight ERC categories returned by my inspection passed, but this was not a complete final sign-off. DRC still reports unrouted connections. No manufacturing files were released.
What I still need from you
  • Original/restored torso and head CAD, including mounting locations and cable-clearance requirements.
  • Photos of the received battery label and balance connector; installed harness lengths and cooling conditions.
  • Where not already supplied: exact head/display and Jetson-carrier revisions, plus the target firmware repository and commit. Joint duty/torque requirements are also needed if reduced-current operation is acceptable.
You do not need to resend the motor model or battery product identity. Execution stopped because your account ran out of ACUs.

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Files

Schematic

Layout

3D View

RF Integration Evidence
Selected purchased board: Waveshare ESP32-S3-DEV-KIT-N16R8 SKU28409, per owner brief. Manufacturer family resources: https://docs.waveshare.com/ESP32-S3-DEV-KIT-N8R8/Resources-And-Documents . The official shared-family CAD is not proof of exact purchased-revision geometry.
Certification status is UNVERIFIED: no exact installed module label/FCC ID/grant, antenna gain, certification configuration or whole-system test report has been checked. Do not claim certification transfer from a similarly named module. Obtain actual hardware labels, approved antenna and integration conditions, documentation and regulatory marking requirements. Define the antenna volume from exact board/module data before mounts or cable routing; no guessed keepout dimension is authorized.
Firmware proposal initially disables RF, but this does not itself establish legal exemption or EMC compliance. Enclosure materials, Jetson, motor currents, cables, clocks and audio may change emissions/susceptibility. Target sales markets and whether RF is enabled in final product remain decisions to record. Lab and antenna data remain external work.