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Project Specification — NF-Universal Alarm
Purpose
Create a best-effort Flux schematic from the uploaded GZ-TU-REV2_sch.png reference image for the NF-UNIVERSAL ALARM circuit.
Architecture

Diagram


USB input connector RAW input rail MCP73831 Li-ion charger U1 Battery and VCC rail Battery cutoff transistor block Q1 VCC system rail 555 timer block U2 555 timer block U3 TRIP net OUTPUT net Transistor output block Q2 LED diode switch indicator block GND return
Required named nets
  • VCC
  • GND
  • RAW
  • BATTERYCUTOFF
  • TRIP
  • OUTPUT
Reconstruction policy
Use exact visible designators where readable. Use common Flux library parts for U1, U2, U3, Q1, and Q2 where the image is unclear. Use generic passives with the visible values and add notes where confidence is limited.
Verification notes
This schematic is image-derived and must be checked against the original CAD/BOM before fabrication.
  • Purpose

  • Architecture

  • Required named nets

  • Reconstruction policy

  • Verification notes