TL;DR
A hobbyist has redesigned a voltmeter clock originally built in 2019, improving its appearance and functionality. The new version uses simpler materials and a more elegant enclosure, with continuous display motion. Details are based on a detailed DIY process shared online.
A hobbyist has unveiled a revised version of a voltmeter clock originally built in 2019, featuring a cleaner design, improved aesthetics, and continuous motion for the hands. The project, shared on Hacker News, highlights a simplified construction process and a focus on visual appeal, making it accessible for DIY enthusiasts.
The new voltmeter clock uses three generic 90° panel voltmeters sourced from Amazon, which were disassembled and customized with printed decals for the dial faces. The design incorporates a continuous motion mechanism, achieved by controlling the duty cycle of digital pulse signals to the meters, eliminating the need for complex analog components.
The enclosure was crafted from maple wood, with a CNC-milled front and back panels. The side walls were bent using a series of internal notches and moisture to achieve a seamless curved shape, then glued and finished with lacquer. The entire process emphasizes simplicity and elegance, contrasting with more complicated previous designs.
The circuit powering the clock is minimal, based on an AVR128DB28 microcontroller. It drives the meters via digital output pins, with two pushbuttons for setting the time. The design avoids digital-to-analog converters, instead relying on pulse-width modulation to control the meter positions, leveraging the inertia of the analog meters for smooth motion.
Why It Matters
This project demonstrates how accessible DIY electronics and woodworking skills can be combined to create functional, aesthetically pleasing timepieces. It offers a low-cost, customizable alternative to traditional clocks, appealing to hobbyists and makers interested in analog displays and microcontroller control.
While primarily a hobbyist project, the approach highlights potential for further customization and integration into personal or artistic timepieces, emphasizing simplicity and elegance over complexity. It also underscores ongoing interest in analog-digital hybrid devices within maker communities.
bayite Pack of 5 Three-Wire Calibratable DC 0~30V Blue Digital Mini Voltmeter Gauge Tester Mount Car Motorcycle Battery Monitor Volt Voltage Meter 0.36" Blue LED Display Panel
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Background
The original voltmeter clock was built in 2019 as a DIY project, using analog panel meters and simple electronics. Since then, hobbyists have explored various designs, often with overly complicated mechanisms or less refined aesthetics. This latest iteration reflects a conscious effort to improve both form and function, inspired by community feedback and personal experimentation.
The project’s detailed documentation, including CAD models, decals, and code, has been shared online, encouraging others to replicate or adapt the design. It fits into a broader trend of accessible, handcrafted electronics and clockmaking among makers.
“The new design simplifies construction and enhances visual appeal, making it more accessible for hobbyists.”
— the project creator
“Using basic electronics and woodworking skills, this project shows what can be achieved with minimal specialized tools.”
— a fellow maker
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What Remains Unclear
It is not yet clear whether the creator plans to commercialize this design or further develop it into a kit or ready-made product. The long-term durability and accuracy of the continuous motion system in varied conditions remain untested beyond the initial prototype.
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What’s Next
The creator may publish detailed instructions, CAD files, and code to enable others to build similar clocks. Future developments could include adding wireless synchronization or more refined display options, depending on community feedback.
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Key Questions
Can I build this voltmeter clock myself?
Yes, the project is designed to be accessible, using common components, woodworking, and microcontroller programming. Detailed documentation and files are expected to be shared online.
What materials are needed for the enclosure?
Primarily maple lumber, CNC milling tools, and finishing supplies like lacquer. The design involves bending wood using internal notches and moisture to achieve a seamless curved shape.
How does the continuous motion work without analog servos?
The system uses pulse-width modulation signals to control the meter’s needle position, relying on the inertia of the analog meter coils to produce smooth, continuous movement.
Is this project suitable for beginners?
While it involves woodworking, electronics, and programming, the project is approachable for hobbyists with some experience in these areas. The creator’s documentation will likely include step-by-step guidance.
