The software open source PLC.

CONTROLLINO is an industry-grade PLC with 100% Arduino compatibility. It can be used for almost any controlling and automation purpose.

What is it?

CONTROLLINO can be described in one sentence: it’s like an industrialized Arduino. It combines the flexibility and open-source nature of the Arduino ecosystem with the safety and reliability of industrial grade PLCs.

100% Arduino compatible

With the simplicity and flexibility of the Arduino ecosystem, you can drastically improve your project time-to-market.
All this without sacrificing reliability and industry-ready performance.

Unlimited I/O

Up to 61 I/O channels and relays, ranging from 5V to 250V at up to 16A. allow you to use CONTROLLINO for an almost limitless range of automation and control applications.

CE & IEC61131 certified

We designed CONTROLLINO with highest industry & electronic safety standards in mind. You can safely and reliably apply our module into a production environment.


CONTROLLINO comes with up to 21 digital input channels with ESD protection and other safety mechanisms.


24 digital outputs (12x High Side Switch, 12x Half Bridge, rated at 2A @ 12 or 24V) are available too.


Want to control higher voltages? Use one of up to 16 relay outputs rated at 250V/16A max.


Interface the CONTROLLINO via industry-standard interfaces like Serial (UART), RS485, I²C or SPI.


Communicate with your CONTROLLINO over USB or through your network via Ethernet connector.

Real Time Clock

An RTC module is integrated in every CONTROLLINO hardware.

Trusted by industry leaders all over the world.

From Startups to Fortune 500 businesses. Over 1000 companies use CONTROLLINO not only for prototyping, but also in production environments and final products.

Choose the programming software of your choice.

You can program CONTROLLINO with the standard Arduino IDE, as well as with many other software solutions like Matlab, Atmel Studio and more. If the software is compatible with traditional Arduino boards, you can use it for CONTROLLINO too.

Experience the revolution
of PLCs.

From small DIY projects to large industrial applications – CONTROLLINO offers a safe, flexible and powerful solution for all your controlling and automation needs.

Click on a product below to learn more:

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