https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Wed, 17 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-hardware-system-overview.en https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-hardware-system-overview.en This is part one of a hardware series on building the FingerScore ring-shaped score recorder yourself. It walks through translating product requirements into circuits, the system block diagram from sensor to MCU to radio to power, a comparison of MCU+BLE SoCs, input methods, and power sources, plus a real BOM example and the learning tools and budget, all in a way a beginner can follow. Wed, 17 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) fingerscorehardwareelectronicsbleembeddedpcb https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-hardware-system-overview.ja https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-hardware-system-overview.ja FingerScore のリング型スコア記録器を自分で作るハードウェアシリーズの第1回です。製品要件を回路へ翻訳する方法、センサーから MCU、無線、電源へとつながるシステムブロック図、MCU+BLE SoC と入力方式と電源の比較、そして実際の BOM 例や学習に必要な道具と予算まで、初心者でも追えるようにまとめます。 Wed, 17 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) fingerscorehardwareelectronicsbleembeddedpcb https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-hardware-system-overview https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-hardware-system-overview FingerScore 반지형 스코어 기록기를 직접 만드는 하드웨어 시리즈의 1편입니다. 제품 요구사항을 회로로 번역하는 법, 센서·MCU·무선·전원으로 이어지는 시스템 블록 다이어그램, MCU+BLE SoC와 입력 방식과 전원의 비교, 그리고 실제 BOM 예시와 학습 도구·예산까지 초보자도 따라올 수 있게 정리합니다. Wed, 17 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) fingerscorehardwareelectronicsbleembeddedpcb https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-pcb-design-miniaturization.en https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-pcb-design-miniaturization.en We cover the final step that turns the FingerScore circuit into a real, touchable ring: PCB design. The schematic-to-PCB flow, component placement and routing, ring form-factor constraints, 2.4GHz antenna layout, DFM and Gerber output, assembly, and even mass production and certification — all in a beginner-friendly way. Wed, 17 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) fingerscorepcbkicadantennaminiaturizationhardwaremanufacturing https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-pcb-design-miniaturization.ja https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-pcb-design-miniaturization.ja FingerScore 回路を本当に触れる指輪にする最後の段階、PCB 設計を扱います。スキマティックから PCB への流れ、部品配置とルーティング、指輪フォームファクターの制約、2.4GHz アンテナレイアウト、DFM とガーバー出力、アセンブリ、そして量産と認証まで初心者にやさしく整理します。 Wed, 17 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) fingerscorepcbkicadantennaminiaturizationhardwaremanufacturing https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-pcb-design-miniaturization https://www.youngju.dev/blog/architecture/2026-06-17-fingerscore-pcb-design-miniaturization FingerScore 회로를 실제로 만질 수 있는 반지로 만드는 마지막 단계, PCB 설계를 다룹니다. 스키매틱에서 PCB로 가는 흐름, 부품 배치와 라우팅, 반지 폼팩터 제약, 2.4GHz 안테나 레이아웃, DFM과 거버 출력, 어셈블리, 그리고 양산과 인증까지 입문자 친화적으로 정리합니다. Wed, 17 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) fingerscorepcbkicadantennaminiaturizationhardwaremanufacturing