TL;DR
A hobbyist has created a refined version of a voltmeter clock, emphasizing a cleaner design and smoother movement of hands. The project involves custom fabrication and simple electronics, showcasing accessible DIY innovation.
A hobbyist has unveiled a redesigned voltmeter clock featuring a cleaner aesthetic and continuous motion of its hands, emphasizing accessible DIY craftsmanship. The project involves repurposing inexpensive voltmeters and custom woodworking, highlighting an innovative approach to analog digital clocks.
The creator used three generic 90° panel voltmeters from Amazon, disassembled and customized with printed decals for the clock face. The design incorporates a new layout with 13 divisions for the hour dial and 61 divisions for minutes and seconds, enabling smooth, continuous movement rather than stepwise jumps.
The enclosure was crafted from resawn maple lumber, with a CNC-milled front and back, and a bent side wall achieved through internal notches and moisture bending, resulting in a seamless, polished appearance. The entire process combined woodworking techniques with precise measurements for a professional finish.
The electronic circuit powering the clock is simple and cost-effective, based on an AVR128DB28 microcontroller. It controls the meters via digital output pins, using a high-frequency pulse train to drive the analog needles without complex DACs. Time-setting is facilitated through small pushbuttons connected to input pins. The code, which is publicly available, manages duty cycles and timing to produce smooth, continuous hand movement.
Why It Matters
This project exemplifies accessible DIY innovation, combining affordable components with craftsmanship to produce a visually appealing and functional clock. It demonstrates how hobbyists can create unique, analog timepieces that blend electronics and woodworking, inspiring others in the maker community.
Such projects also highlight the potential for personalized, handcrafted devices that challenge conventional digital displays, appealing to enthusiasts interested in vintage aesthetics and custom engineering.
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Background
The concept of voltmeter clocks has existed since at least 2019, with hobbyists experimenting with analog gauges to display time. Previous designs often faced issues with aesthetics and movement smoothness. This latest iteration refines the idea by improving the visual design and implementing continuous motion, a feature not common in earlier versions. The project was shared on Hacker News, reflecting ongoing interest in accessible DIY clockmaking.
“The new design emphasizes a cleaner look and smooth, continuous motion, achieved through careful measurement and simple electronics.”
— the creator
“Using affordable voltmeters and straightforward woodworking, I aimed to make a clock that’s both attractive and easy to build.”
— the creator
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What Remains Unclear
It is not yet clear how durable or precise the clock will be over extended periods, or how widely this design might be adopted by the maker community. Long-term performance and potential variations in component quality remain untested.
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What’s Next
The creator plans to share detailed build instructions and source files publicly, encouraging others to replicate or improve upon the design. Future updates may include automation features or alternative materials to enhance durability and aesthetics.
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Key Questions
What makes this voltmeter clock different from previous versions?
This version features a cleaner, more polished enclosure, continuous motion of the hands, and simplified electronics, making it more attractive and easier to build.
What materials are used in the construction?
The enclosure is made from resawn maple lumber, with custom CNC-milled parts. The clock faces are printed decals on the voltmeters, and electronics are based on an AVR microcontroller.
Can I build this clock myself?
Yes, the creator has made the design and code publicly available, and the project uses affordable, readily available parts, making it accessible to hobbyists with basic woodworking and electronics skills.
Will the clock keep accurate time?
The clock relies on an internal microcontroller and pushbutton adjustments. While it should maintain reasonable accuracy, long-term precision depends on component quality and calibration.
