廃品回収した蛍光表示管で作る時計
著者が廃品回収したVFD（蛍光表示管）を使って、独自のデジタル時計を製作したプロジェクトの詳細。回路設計やマイコン制御といったハードウェア・ソフトウェア両面の工程を解説し、光り方やタイミング調整などの工夫を紹介している。
関連記事
A hobbyist salvaged vacuum fluorescent display (VFD) tubes from an old calculator and built a custom clock. The project involved reverse-engineering the tube pinout, designing a multiplexed driver circuit with a MOSFET and microcontroller, and using a 32.768 kHz crystal for accurate timekeeping. The finished clock was mounted in a CNC-milled wooden enclosure.
The article describes building a voltmeter clock where the design focus was as much on the wooden enclosure and aesthetics as on the electronics, highlighting that circuit design can be as much about craftsmanship as engineering.