Arduino Opta Lite Micro PLC (Ethernet and USB-C ports)

Arduino Opta Lite Micro PLC is an industrial-grade micro programmable logic controller designed for reliable machine control and Industrial IoT integration. Built for PLC engineers and automation developers, this compact industrial controller combines real-time processing with the flexibility of the Arduino ecosystem. Powered by a dual‑core STM32H747XI Cortex‑M7 + M4 processor, the DIN‑rail automation controller supports both traditional PLC programming and Arduino sketch development. Multiple industrial communication interfaces, secure hardware architecture, and seamless cloud connectivity allow this industrial control platform to perform monitoring, predictive maintenance, and smart factory automation tasks within modern production environments.

Industrial-Grade PLC Architecture with Dual-Core Processing

This micro PLC controller integrates a powerful STM32H747XI dual‑core processor that combines a high‑performance Cortex‑M7 core with an efficient Cortex‑M4 core for deterministic real-time operations. Such architecture enables simultaneous logic execution, data acquisition, and network communication. The compact industrial automation unit provides 8 configurable analog/digital inputs and 4 high‑current relay outputs capable of switching up to 10A each. Designed for industrial environments, the DIN‑rail compatible controller ensures stable operation across demanding automation scenarios including machine control, process monitoring, and distributed control systems.

Flexible Programming with Arduino and IEC‑61131‑3 PLC Languages

This industrial automation controller supports both Arduino sketches and the widely adopted IEC‑61131‑3 programming standard used across professional PLC environments. Development through the Arduino PLC IDE enables programming using Ladder Logic Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Sequential Function Chart (SFC), and Instruction List (IL). Such versatility allows engineers to quickly deploy new automation logic or migrate existing PLC programs into the Arduino ecosystem. The hybrid programming environment combines the simplicity of Arduino development with the structure and reliability required for industrial automation workflows.

Secure Industrial IoT Connectivity and Cloud Integration

This industrial IoT controller is designed with security and remote management capabilities in mind. A built‑in ATECC608B secure element ensures hardware‑level protection and supports X.509 certificate authentication for secure cloud communication. The Ethernet-enabled PLC platform supports industrial networking protocols including TCP/IP and Modbus TCP, allowing seamless integration with existing production systems. Over‑the‑air firmware updates and remote dashboard monitoring simplify device management while maintaining high standards of operational security within connected factory environments.

Figure: Product Image

Modular Industrial Integration and Scalable Automation

This DIN‑rail programmable controller integrates easily with existing machines, sensors, and industrial equipment across production lines. Ethernet networking and USB‑C connectivity allow straightforward integration with industrial gateways, sensor networks, and edge computing systems. The modular automation platform can operate as part of larger industrial solutions that include sensor modules, gateways, and cloud services within the Arduino ecosystem. Such flexibility supports scalable automation deployments ranging from small machine controllers to distributed monitoring systems across factories or infrastructure installations.

Figure: Connection Diagram for Modbus RTU with RS-485 interface

This industrial micro PLC platform is suitable for smart manufacturing, remote monitoring, and connected automation infrastructure. Common deployments include energy monitoring systems, tank level supervision, and distributed remote terminal unit (RTU) control. The compact automation controller also fits industrial IoT gateways, machine retrofitting projects, and data‑driven predictive maintenance systems where reliable PLC control and modern connectivity must operate together.