TL;DR
A hobbyist has developed a new version of a voltmeter clock, focusing on better design and easier assembly. The project uses standard voltmeters, custom woodwork, and a microcontroller to display time via analog meters.
A hobbyist has unveiled a redesigned voltmeter clock that emphasizes aesthetic refinement and construction simplicity, using off-the-shelf voltmeters and custom woodworking. The project, shared on Hacker News, highlights a practical approach to building a unique, analog timepiece.
The new voltmeter clock features three generic 90° panel voltmeters, disassembled and customized with printed decals to display hours, minutes, and seconds. The design incorporates continuous motion for each hand, achieved through software-controlled pulse signals that drive the meters without requiring complex analog circuitry.
The enclosure is crafted from resawn maple lumber, with a CNC-milled front and back and a carefully bent side wall created by internal notches and moisture bending techniques. The assembly process involved precise fitting with templates, sanding, and finishing with nitrocellulose lacquer. The circuit is based on an AVR128DB28 microcontroller, powered by a wall wart, with simple pushbuttons for setting the time. The system uses pulse-width modulation of digital signals to control the meters’ positions, relying on their inertia and coil inductance to produce smooth movement.
Why It Matters
This project demonstrates how hobbyists can create functional and visually appealing analog clocks with readily available components and accessible woodworking techniques. It offers an alternative to digital displays, appealing to enthusiasts interested in electronics, craftsmanship, and unique design.
Such projects can inspire DIYers and educators by showing how to combine electronics and woodworking creatively, potentially leading to more personalized or artistic timepieces.
analog voltmeter clock kit
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Background
The concept of voltmeter clocks dates back several years, with early versions built for aesthetic or experimental purposes. This latest iteration builds on previous ideas but emphasizes simplicity, affordability, and visual refinement. The builder previously shared a basic version in 2019, and this revised approach incorporates lessons learned, such as hiding the meter flanges and improving enclosure craftsmanship.
Recent years have seen a resurgence of interest in analog and mechanical clocks among hobbyists, driven by a desire for craftsmanship and unique design. This project fits within that trend by combining electronics with woodworking and custom fabrication.
“The goal was to make a clock that’s both functional and aesthetically pleasing, using simple components and woodworking techniques.”
— the project builder
“It’s impressive how accessible this makes building a voltmeter clock for hobbyists.”
— Hacker News comment
microcontroller for analog clock
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What Remains Unclear
It is not yet clear how the clock performs over long-term use or how precisely it maintains time, as detailed testing and user feedback are still pending.
DIY woodworking clock enclosure
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What’s Next
The creator plans to share detailed schematics, source code, and assembly instructions publicly, encouraging others to build or modify similar clocks. Further testing and potential enhancements, such as adding wireless time synchronization, are expected to follow.
off-the-shelf voltmeters for projects
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Key Questions
How accurate is the voltmeter clock?
The accuracy depends on the microcontroller’s timing and the stability of the crystals used, but detailed long-term accuracy data has not yet been published.
Can I customize the design or use different voltmeters?
Yes, the builder used generic voltmeters and provided templates for decals, so customization is feasible with similar components.
What tools and skills are needed to build this clock?
Basic electronics knowledge, woodworking skills (including CNC milling and bending), and familiarity with microcontroller programming are required.
Will there be a detailed guide available?
The builder intends to publish schematics, code, and instructions online for hobbyists interested in replicating or modifying the design.
