류형록 | Engineering Portfolio · 전체 프로젝트

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PADS 회로·PCB·BOM / STM32F401·AD7997·AD5629R

전원·전류/전압 측정·ADC/DAC·USB/UART 경로

회로·PCB 갤러리 · 설계 파일

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Solar-cell measurement mainboard schematic

산출물: PADS 회로도·PCB·BOM / 후속 시험: 측정 정확도·생산 적합성

Project summary

I analyzed a solar-cell multichannel measurement system built around an STM32F401 mainboard and measurement modules. A published 12-channel MPPT data-logger architecture was used as a technical reference while I traced power, current/voltage sensing, ADC/DAC, connector, and USB/UART paths in the stored PADS design.

System architecture

12 V input → 5 V/3.3 V rails → STM32F401 mainboard → three measurement-module connectors → current/voltage signal paths → ADC/DAC → USB/UART

Design activities

• Traced the 12-V input, 5-V/3.3-V rails, STM32F401, SWD, USB/UART, and module connectors.
• Decomposed the measurement module into eight-channel current sensing, AD7997 conversion, OPA703 voltage paths, and AD5629R DAC control.
• Compared schematic, PCB, and parts-list information by functional block and net.
• Curated mainboard/module design files for public review while excluding installers, vendor PDFs, and third-party Gerbers.

Engineering competencies

• Low-voltage power-tree and reference-rail analysis
• Multichannel analog measurement and mixed-signal interface design
• MCU, ADC, DAC, UART, and connector-level system partitioning
• PCB source/BOM review and production handoff preparation
• Relevant to power electronics, battery/BMS platforms, vehicle power distribution, semiconductor equipment, and production engineering