SparkFun

Arduino Opta WiFi

Name: Arduino Opta WiFi
Brand: SparkFun
SKU: SF-DEV-21280
Price: 533.9 AUD
Availability: InStock

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Arduino Opta is a secure, easy-to-use micro PLC with Industrial IoT capabilities. Designed in partnership with Finder – leading industrial and building autom...

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Arduino Opta is a secure, easy-to-use micro PLC with Industrial IoT capabilities. Designed in partnership with Finder – leading industrial and building automation device manufacturer – Opta allows professionals to scale up automation projects while leveraging the Arduino ecosystem. Supporting both Arduino sketch and standard PLC languages, including LD (Ladder Logic Diagram) and FBD (Function Block Diagram), it was designed with PLC engineers in mind.

Its powerful STM32H747XI dual-core Cortex®-M7 +M4 MCU allows users to perform real-time control, monitoring and implement predictive maintenance applications.

Secure and durable by design, it supports OTA firmware updates and ensures data security from the hardware to the Cloud thanks to the onboard secure element and X.509 Standard compliance.

All while maintaining Arduino Pro’s signature easy deployment in production thanks to a vast range of readily available software libraries and Arduino sketches.

Last but not least, various connectivity options make keeping everything under control effortless via real-time dashboards combined with the intuitive Arduino Cloud (or third-party services).

Opta comes in three variants so you can choose the best option for your project. Opta WiFi features Ethernet onboard and USB-C programming ports, RS485 half duplex connectivity interface, and Wi-Fi/Bluetooth® Low Energy connectivity.

Features:

Input: 8x configurable digital / analog (0-10V) input
Processor: STM32H747XI Dual ARM® Cortex®:
- Cortex -M7 core up to 480 MHz
- Cortex -M4 core up to 240 MHz
Connectivity: Support 10/100 Ethernet (TCP/IP or Modbus TCP), USB-C, RS485 half duplex, Wi-Fi + Bluetooth® Low Energy
Memory: 1MB RAM (programming), 2MB internal + 16MB Flash QSPI
RTC: Typical 10 days power retention at 25°C, NTP sync available through ethernet
IP Protection: IP20
Output: 4x relays (250 V AC - 10A)
Programming Languages:
- Arduino programming language via IDE
- IEC-61131-3
  - Ladder Diagram (LD)
  - Function Block Diagram (FBD)
  - Sequential Function Chart (SFC)
  - Structured Text (ST)
  - Instruction List (IL)
Security: ATECC608B Secure Element
Supply Voltage: 12-24 V DC
Operating Temperature: -20°C to +50°C (-4°F to 122°F)
Dimensions:
- Width: 69mm
- Length: 80mm
- Height: 90mm
Weight: 210g (7.4oz.)
Certifications: cULus listed, ENEC, CE

Documents:

Jargon buster

Plain-language definitions for the technical terms used above.

DC: DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
IDE: Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
IoT: Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
Modbus TCP: Modbus TCP is a version of the Modbus protocol that runs over Ethernet networks. When a product lists Modbus TCP, it can connect to industrial systems that communicate over standard network cabling.
OTA: OTA means over-the-air updating, where a device's firmware is updated wirelessly rather than through a programming cable. This lets firmware be updated or maintained after a device is installed without a physical connection.
RAM: RAM (random-access memory) is fast, temporary memory a device uses for working data while it is running; in its common volatile form, its contents are lost when power is removed. Some devices offer a mode that applies settings to RAM only, which is handy for testing changes temporarily because they are not stored permanently and disappear at power-off.
RS485: RS485 is a robust differential serial communication standard often used in factories, farms and buildings where cables may be long or electrically noisy, and it can link many devices on a single pair of wires. When a product lists RS485, it can communicate with industrial sensors, meters and control equipment over longer distances than typical hobby serial wiring.
RTC: A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
USB-C: USB-C is a small, reversible USB connector that can carry power, data and, on some devices, video over a single cable. The same connector can range from charging only to high-speed data, so the functions a given port actually supports vary.