A nicer voltmeter clock

An individual has developed a redesigned voltmeter clock that features a more attractive appearance and improved functionality, using three inexpensive panel voltmeters and custom-machined wooden parts. This project highlights accessible electronics and craftsmanship, making it notable for hobbyists and tech enthusiasts.

The project began as a personal initiative to improve upon an earlier voltmeter clock built in 2019. The creator disassembled three generic 90° panel voltmeters from Amazon, measuring and customizing their faces with printed decals to display hours, minutes, and seconds. Unlike previous designs, this version incorporates continuous motion for the hands, achieved through software-controlled pulse signals rather than traditional step movements. The clock’s enclosure was crafted from machined wood, with internal notches allowing a curved sidewall to be shaped without specialized jigging. The circuit uses an AVR128DB28 microcontroller powered by a wall wart, with simple digital outputs controlling the meters via pulse-width modulation, eliminating the need for complex analog components. The entire build emphasizes affordability, with components costing around $9 per meter, and a focus on aesthetic refinement, including hiding the meter flanges behind recessed patterns.

Why It Matters

This development matters because it demonstrates how accessible electronics and craftsmanship can produce a functional, visually appealing clock using inexpensive parts. It offers a practical example for hobbyists interested in combining analog gauges with digital control, and highlights a creative approach to integrating electronics with custom woodworking. The project also shows how simple microcontrollers can control analog devices effectively, encouraging more DIY innovations in clock design and display technology.

Background

The concept of voltmeter clocks dates back to at least 2019, when the creator first built a basic version. Since then, the idea has persisted among electronics hobbyists, but many existing designs are either overly complicated or lack aesthetic appeal. This latest iteration streamlines the design, focusing on simplicity, cost-effectiveness, and visual refinement. The use of easily sourced panel meters and custom-machined enclosures marks a shift toward more accessible DIY projects, emphasizing craftsmanship alongside electronics.

“The new design aims to be both prettier and more functional, with continuous motion and a cleaner look.”

— the project creator

“Using simple components and custom woodworking, I wanted to make a clock that’s both accessible and visually appealing.”

— the creator

What Remains Unclear

It is not yet clear how durable the design is over long-term use or how precisely it maintains time without further calibration. The project remains a hobbyist prototype, and commercial or mass production aspects have not been discussed.

What’s Next

The creator plans to share detailed assembly instructions and code, potentially enabling others to replicate or improve the design. Future updates may include more refined control algorithms or alternative display options.

Key Questions

Can I build this clock with readily available parts?

Yes, the project uses inexpensive, off-the-shelf panel voltmeters from Amazon and a common microcontroller, making it accessible for hobbyists.

Does the clock keep accurate time?

The clock relies on a simple microcontroller and a 32.768 kHz crystal, which generally provides good accuracy, but long-term precision may require calibration.

Is this project suitable for beginners?

While the electronics are straightforward, the woodworking and assembly require some skill. Basic knowledge of microcontrollers and fabrication will help.

Will there be detailed instructions available?

The creator intends to share design files, code, and assembly guidance to facilitate replication by hobbyists.