Spartan Arduino PLC 16RDA (Relay Output)

Spartan Arduino PLC 16RDA (Relay Output) is an industrial programmable logic controller built around the Arduino Leonardo platform, combining maker-friendly development with reliable control hardware. This DIN‑rail industrial automation controller integrates 8 digital inputs and 6 relay outputs, enabling direct control of motors, lighting systems, actuators, and industrial equipment. USB programming simplifies firmware deployment while maintaining compatibility with the Arduino development ecosystem. Designed for modular automation projects, this relay‑output PLC supports multi‑module expansion through I2C master‑slave communication, allowing scalable industrial control systems suitable for prototyping, smart equipment, and compact factory automation environments.

Figure: Spartan Arduino PLC 16RDA (Relay Output)

Figure: Spartan Arduino PLC 16RDA (Relay Output)

Figure: Spartan Arduino PLC 16RDA (Relay Output)

Integrated Industrial I/O Control

This industrial PLC module integrates 8 digital input channels and 6 relay output channels, enabling reliable switching and monitoring of external equipment. Relay outputs allow direct control of higher‑power loads such as pumps, motors, lighting systems, and industrial actuators. The compact automation controller is designed for DIN‑rail installation and stable field deployment. Combined input monitoring and relay actuation capability allows this programmable control board to function as a compact automation core for equipment control, machine interfaces, and small‑scale industrial process systems.

Native Arduino Leonardo Development

The programmable automation board is built around the Arduino Leonardo architecture, enabling direct USB programming through the Arduino IDE without specialized PLC development tools. Firmware deployment, debugging, and iterative development become significantly easier compared with traditional industrial controllers. Compatibility with the Arduino ecosystem provides access to extensive libraries, community resources, and rapid prototyping workflows. This Arduino‑compatible industrial controller therefore bridges maker‑level flexibility with practical automation hardware for rapid development of custom industrial logic and embedded control systems.

Scalable Multi‑Module Communication

This industrial control platform supports I2C master‑slave communication, enabling connection of up to 127 expansion modules within a distributed control network. Such architecture allows flexible scaling of input, output, and functional modules for complex automation systems. Combined with additional interfaces including USB, RS485, SPI, and TTL, the modular PLC controller supports integration with sensors, HMIs, external processors, and industrial communication networks. Configurable components and expansion capability make this programmable automation unit adaptable for evolving control requirements.

Typical deployment scenarios include equipment automation, machine control panels, smart factory subsystems, and rapid industrial prototyping. The Arduino‑compatible PLC platform combines open‑source programmability, relay‑based switching capability, and modular communication expansion, making this industrial automation controller suitable for engineering development, educational training labs, and small‑scale production control systems requiring flexible programmable logic.