HARDWARE-IN-THE-LOOP TEST AUTOMATION
We put your device through the wringer.
Your firmware ships weekly. Your device testing is a person with a phone and a spreadsheet. Wringer builds the rig that exercises your real hardware, and the AI agents that write, run, and maintain the tests, so every build gets a verdict on real devices.
WHAT YOU GET
The rig
A physical test fixture built for your device: motion, RF, power control, cameras, whatever it takes to exercise real hardware the way real users do. Installed at your site or run from our lab.
The agents
AI agents read your specs and tickets, generate test cases, run them on the rig, and maintain them as your firmware changes. Self-healing coverage instead of a stale spreadsheet.
The verdict
Every build gets a regression verdict wired into your CI and Slack. Pass, fail, and the trace to prove it. You find out before your customers do.
THE LAB
Working demonstrations on real hardware. Film of each lands here as it comes off the bench.
Agentic regression rack
An agent reads a plain-English spec, writes the test cases, executes them over BLE against production smart plugs, and verifies ground truth with a packet sniffer.
Motion-replay rig
Record a human motion once, replay it mechanically forever. Deterministic regression testing for tracking and activity-detection algorithms in wearables.
OTA torture test
Orchestrated over-the-air updates across a device fleet with injected failures: killed radios, mid-flash power cuts. Verifies every node recovers.
Camera-verified physical UI
A camera watches the device. A vision model asserts the LED, screen, or actuator actually did what the firmware claims it did.
TRACK RECORD
Built robotic rigs that recorded and replayed human exercise motion to validate fitness algorithms across the product range. Motion Fitness, 4 years.
Built an autonomous robot that moved Wi-Fi devices through real environments, and automated multi-AP interoperability testing in an anechoic chamber.
A decade of hardware-in-the-loop test automation, currently applied through long-running AI agents, MCP tooling, and vectorized test libraries.
Ship firmware without flinching.
One founder, one rig at a time, built by the person who did this for Apple. If your device needs testing that a spreadsheet can't give it, write me.
info@wringerlabs.com