Limen transforms an iPhone into a complete production vision system — pair in seconds, train in hours, and let your machines act the instant a rule fires.Limen transforms an iPhone into a complete production vision system. Pair in seconds. Train models in hours. Monitor every part in real time. Set a trigger, and let your machines act instantly — all through one beautifully simple platform.
iPhone camera · on-device inference · OPC UA to the machine · no middleware, no extra hardware
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On most lines, quality is a spot check and a tally sheet. A bad part gets found at packing — or by your customer. And the classic fix, an industrial vision system, means capital budget, an integrator on site, and months of lead time. So the line keeps running blind.
Limen removes the trade-off: machine-vision inspection at the price of a phone mount and a subscription — on hardware your team already knows how to use.
Mount an iPhone at the station and pair it to your workspace with a QR code. Load a vision model — Roboflow or your own Core ML — and draw the region that matters. Minutes, not months.
Every cycle is classified OK or NOK the moment parts hold steady in frame — live counts at the station, on every paired phone, and in the browser.
Set a rule — a quantity reached, a NOK share crossed, a class spotted. The moment it fires, alerts reach your team and results land in the machine's controller over OPC UA — no middleware in between.
The iPhone at the station.
Runs the vision model on-device, counts every cycle OK or NOK, fires your alert rules, and writes results straight to the machine — no cloud round-trip, no middleware, no extra hardware.
one per station · pairs by QR
Everyone else.
Scan a QR or enter a 6-digit code and follow the line live — video with detection overlays, run progress, and push alerts. On iPhone, or in the browser at your Limen Control Center.
unlimited · always free
Set a run target and Limen tallies OK and NOK cycle by cycle. Alert rules fire at the milestones you choose — a quantity reached, a NOK share crossed, a specific class spotted — and every run stays in the history with its quality summary and photo evidence of the cycles that mattered.
Auto-fit snaps a zone around each part in the fixture, then lock and run. A NOK isn't just a count — it's a position. The nok_slots bitmask tells your PLC exactly which slot failed, the moment it happens, so the bad part is dealt with before it moves on.
Browse the machine's live OPC UA nodes, map your outputs, and verify them against the controller before you run. Counts, alerts, and NOK slots land in the PLC, robot, or CNC itself — and if the network drops, a retry queue delivers every write in order the moment it's back.
Objects └─ Inspection ├─ ok_count Int32 496 ├─ nok_count Int32 4 ├─ nok_slots UInt32 0b000100 └─ run_active Boolean true
Viewers join a workspace with a 6-digit code and follow the station in real time — live video with detection overlays, run progress, and alerts pushed to every paired phone. And from your Control Center, on every screen. Viewers are always free.
Use case · Casting
Industrial output
Use case · Assembly
Use case · Packaging
Session schedule
What changes when the camera never looks away.
A die-casting cell runs two stations over its trim press. Every flawed casting is flagged in-cycle, and the nok_slots bitmask tells the PLC which cavity failed — the part is diverted before it reaches the bin.
casting · 2 stations
An assembly line added a station to a new fixture between shifts: mount the iPhone, draw the detection region, set the run target. No PC, no network drops, no integrator on site.
assembly · 1 station
A packaging line counts every tray against a 12-piece target. Short trays stop the sealer over OPC UA, and the night shift's runs are in the morning review with OK/NOK totals per run.
packaging · 3 stations
A traditional vision cell starts around the price of a car. A Limen station is one iPhone watching one line — and everyone who watches is free, on the phone and in the browser.
A first station, free.
For lines that run every day.
Several lines, several sites.
Every station includes the live feed, run counting, and alerts on paired phones. Prices exclude VAT.
Put a camera on your line this week and cancel the vision-system project — the first station is free, and your whole team watches for free.
The Limen camera app runs on iPhone
