Project Spec Refinement
Worked for 2 mins 20 sec
Refined the Project Specification with complete architecture, subsystem requirements, interfaces, preliminary power budget, mechanical/RF constraints, open assumptions, and measurable acceptance criteria. It now reflects the current four-layer 70 × 27 mm board and 88 remaining airwires.
Thought for 8 sec
I’ll audit the schematic and current ERC/DRC findings, resolve issues that affect layout readiness, finalize the power budget in the project files, then optimize component placement while leaving every net unrouted.
Worked for 18 mins 22 sec
Created a project doc
Power Budget
Power Budget
Scope and assumptions
Datasheet-grounded planning budget for the 3.3 V rail and 1S LiPo/USB sources. Battery capacity and OLED model are unspecified, so runtime is expressed parametrically and OLED current is an explicit allowance, not a claimed value. Values are estimates until verified on assembled hardware.
- Battery usable range: 3.0–4.2 V, protected 1S LiPo; capacity
CbatmAh remains TBD. - 3.3 V rail: TPS63070 in power-save mode; 54 µA typical VIN quiescent current and 5 µA typical VOUT quiescent current from the datasheet test condition.
- Conversion assumptions: 85% conservative at 3.0 V for peak sizing; 90% planning efficiency for moderate active loads. At sleep currents, efficiency is not used; quiescent and leakage currents are added directly.
Blocked because no ACUs are currently available, so the schematic review, DRC remediation, finalized power budget, and placement optimization could not be executed. No schematic, PCB, routing, or project-file changes were made; routing remains untouched.
Resolve ACU limitation
Document power assumptions
Waiting for input
