controllino.com

What It Is

CONTROLLINO is an industrial-grade PLC product line from Austria, positioned as a controller that is “based on open-source software” and “100% Arduino compatible.” It aims to bring the low barrier to entry and flexibility of the Arduino ecosystem into industrial automation, with products including MINI, MAXI, MEGA, MICRO, accessories, relays, and training kits. It is suitable for everything from prototyping and proof-of-concept work to deployment in production environments.

Core Capabilities

In terms of functionality, CONTROLLINO provides interfaces such as digital I/O, analog I/O, relays, Pin Header, USB, Serial/UART, RS485, I²C, SPI, and Ethernet, and also mentions connectivity options including Modbus TCP, MQTT, and CAN. Some models offer up to 61 I/O channels, relay capacity up to 16A/250V, and automatic switching between 12V/24V power supplies. The MICRO version is based on RP2040 and includes features such as analog input, current monitoring, output current limiting, and a cryptographic chip. Its main value is that it allows developers familiar with Arduino to move into industrial control more quickly, rather than relying entirely on closed PLC toolchains.

Openness, Ecosystem, and Documentation

The official materials repeatedly emphasize open source software and freedom from vendor lock-in, but the crawled content does not provide details about licenses, source code repositories, or the scope of hardware openness. Therefore, it is only possible to confirm its open-software orientation, not to assume that it is fully open source across the entire stack. In terms of ecosystem, it provides Arduino Libraries and Compatible Software, and supports common industrial and embedded communication interfaces. Documentation resources are relatively complete, including Tutorials, Datasheets, User Manual, Pinout Tables, Block Diagrams, Certificates, and CAD Files, making it suitable for engineering selection and wiring/integration work.

Pricing and Support

Pricing is based on one-time hardware purchases: MINI is around €139-149, MAXI around €249-259, MEGA €329, and the Training Kit €879, all excluding VAT and shipping. Support channels include phone and email, and there are entries for returns, warranty, RMA, and resellers. However, no SLA, paid enterprise support, or localized service information was found.

Pros, Cons, and Who It’s For

Its strengths are Arduino compatibility, a rich set of interfaces, CE/UL/IEC 61131 certifications, and the ability to reduce toolchain lock-in compared with traditional PLCs. Its drawbacks are that the boundaries of its open-source model are unclear, pricing and maturity information for AI Studio is limited, and procurement costs, logistics, and after-sales experience in China are also unclear. It is well suited to industrial automation engineers, makers, education and training institutions, and small to midsize teams that want to build control systems quickly using an open ecosystem.

Access from China

The crawled text does not make it possible to determine access stability, payment methods, or shipping support for mainland China, so china_access is marked as unknown. If procurement or access is restricted, alternatives to compare include Arduino industrial expansion solutions, Industrial Shields, or traditional PLC vendors.