FrameGuard is a small, low-cost box that watches the metal frames of factory machines and turns red the moment they become dangerous — so people are warned before they reach out.
Green means safe. Red means stop and call maintenance. A blinking light means the monitor itself needs attention — it never pretends to be fine.
“Nothing looks different. The machine keeps running. The first person to notice may be the operator who touches it.”
Every day, millions of people work beside machines powered by mains electricity. Insulation ages. A cable gets pinched. Moisture creeps in. An earth connection quietly works loose. And the metal body of a machine can become live without any visible sign.
Proper earthing, residual-current protection and regular inspection are the foundation of electrical safety, and nothing replaces them. But in many workplaces — especially small and medium factories — continuously watching every machine is simply too expensive. Problems are found during the next scheduled check, or after someone has been hurt.
FrameGuard was built to close that gap with something simple and affordable: a monitor that sits on the production line, keeps watching, and speaks up immediately.
We are sharing it because worker safety should not depend on budget. If it helps one maintenance team find a leaking machine before a worker does, it has done its job.
Designed for busy factory floors, where a warning only matters if everyone can read it at a glance.
Keeps an eye on up to four machines at once, day and night, without anyone having to remember to check.
A bright red light and a clear message on the screen, visible from across the line. No training needed to understand it.
If a sensor wire is cut or comes loose, it says so. A silent failure should never look like “everything is safe”.
Can report to a central screen or factory system, so one person can look after many machines at once.
Built from common, low-cost parts with a 3D-printed enclosure, so it can be reproduced and improved by anyone with basic electronics skills. The circuit board design will be published once it has been fully tested.
We are building this step by step, and we only share what we have tested. Here is where we are, and where we are going.
Open today. Measurement, clear alarms, self-checking sensor wires and reporting to a central system.
Open today. Anyone with a 3D printer can make the case.
The schematic, board layout and parts list are being finalised. We will publish them as soon as the board has been tested and proven stable — because a safety device should only be shared once it can be trusted.
A home for everyone using FrameGuard: share installations, field reports and calibration data, and learn from each other.
See every machine on every line, live, from one screen — with alarm history, so problems are spotted and fixed before anyone gets hurt.
This is an open project. You do not need to be an expert to help — every field report, translation and honest review makes the next factory a little safer.
Installed it somewhere? Tell us what you found, what worked and what did not.
Hardware variants, enclosures, testing on 60 Hz grids — build on it and share back.
A second pair of eyes on how alarms are raised is one of the most valuable contributions.
Translate the documentation, or pass it to a maintenance team that could use it.
FrameGuard is an early-warning aid. Please keep it in its place: