ANDON: From Paper Lantern to Industrial IoT

Most production lines use some form of status reporting. The purpose is simple: when an operator needs help, a shift leader should know immediately and respond before a small interruption becomes a larger production problem.

This type of production signal is often called ANDON.

Where the word came from

ANDON comes from the Japanese word for a paper lantern. In the manufacturing context, the idea became widely associated with Toyota production practices: an operator could raise a visible signal when something on the line needed attention.

In a small workshop, a physical signal can be enough. In a modern factory hall, it is not. A team leader may be responsible for a large area, several lines, and many different kinds of incidents. A signal that is only visible in one place is easy to miss, hard to analyze later, and almost impossible to scale across sites.

From visual signal to connected workflow

This is where IoT changes the ANDON concept. Instead of relying on a lamp, paper card, or manual report, the operator can trigger an event from a connected device. The event is sent to the right system, shown to the right people, and stored as data that can be analyzed later.

CHESTER Push is well suited for this workflow because it can provide configurable physical buttons in a rugged, battery-powered device. A factory can map each button to a defined production state, such as material shortage, quality issue, maintenance request, or supervisor assistance.

CHESTER Counter can extend the same monitoring flow with production counts, machine cycles, or takt-time visibility. Together, these inputs give teams a clearer picture of what is happening on the line.

Why a modern ANDON system matters

A connected ANDON workflow helps reduce the delay between a problem and a response. It also makes recurring interruptions visible. Instead of relying only on verbal handover or handwritten notes, the production team can see which incidents happen most often, where they happen, and how long resolution takes.

For managers, this creates a better basis for process improvement. For operators, it makes asking for help faster and more consistent. For integrators, it creates a practical entry point into industrial IoT because the first deployment can be focused, measurable, and non-invasive.

HARDWARIO and ANDON in practice

HARDWARIO has been working with non-invasive production monitoring since 2019, including ANDON-style deployments in industrial environments. The goal is not to replace existing manufacturing systems. The goal is to connect missing signals from the shop floor and make them available where they create value.

If you are planning production monitoring, start with the simplest question: which event should never be missed? Once that signal is connected, the path toward better visibility, faster response, and continuous improvement becomes much easier.