Arduino Opta, specially designed for PLC engineers, is a secure, easy-to-use micro PLC with industrial IoT capabilities.
Opta is equipped with frequently used networks and protocols in multiple industries, and supports both Arduino sketch and standard PLC languages, including LD (Ladder Logic Diagram) and FBD (Function Block Diagram). And its powerful STM32H747XI dual-core Cortex-M7 + M4 MCU allows users to perform real-time control, monitoring and implement predictive maintenance applications.
Arduino Opta, specially designed for PLC engineers, is a secure, easy-to-use micro PLC with industrial IoT capabilities.
Opta is equipped with frequently used networks and protocols in multiple industries, and supports both Arduino sketch and standard PLC languages, including LD (Ladder Logic Diagram) and FBD (Function Block Diagram). And 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, Opta 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. Meanwhile, it maintains 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 intuitive Arduino Cloud (or third-party services). Users can update wireless firmware and achieve remote control easily.
Figure 1: Product Image
Opta is mainly programmed on Arduino PLC IDE, which makes PLC programming easy. Choose any of the 5 programming languages defined by the IEC 61131-3 standard (Ladder, Functional Block Diagram, Structured Text, Sequential Function Chart, or Instruction List) and users can quickly code PLC applications or port existing ones to Arduino Opta.
Figure 2: Connection Diagram for Modbus RTU with RS-485 interface
Integrate the micro PLC with users' existing machines, devices, and production lines, or combine it with other elements in the modular and versatile Arduino ecosystem, from small and smart sensor-packed modules to SOMs to gateways, for end-to-end solutions that can be customized to meet any need.
Arduino Opta is available in three variants:
Arduino Opta Lite: onboard Ethernet and USB-C ports
Arduino Opta RS485: onboard Ethernet and USB-C ports, plus RS-485 connectivity
Arduino Opta WiFi: onboard Ethernet and USB-C ports, plus RS-485 and WiFi/Bluetooth LE
Applications
Energy management
Tank level monitoring
Use as an RTU
Specification
Supply Voltage: 12-24VDC
Input: Analog/digital input × 8
Output: Relay × 4 - Normally Open (NO) - Maximum: 10A per relay
USB Connection: Used for host and device operations, programming/refresh, and power supply for programming (not for driving external high-power peripherals)
Communication: support 10/100 Ethernet (TCP/IP or Modbus TCP) USB-C RS485 half duplex
What is the price of Arduino Opta RS485 Micro PLC (Ethernet and USB-C ports, RS485) in Bangladesh?
The latest price of Arduino Opta RS485 Micro PLC (Ethernet and USB-C ports, RS485) in Bangladesh is BDT 33,450 You can buy the Arduino Opta RS485 Micro PLC (Ethernet and USB-C ports, RS485) at best price from our RoboticsBD or visit RoboticsBD Office.
Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product.
Product Images are shown for illustrative purposes only and may differ from the actual product.
Product Details
RBD-3097
4 Items
All product reviews are from verified purchases and are comply with DIRECTIVE (EU) 2019/2161
Input voltage(V): 9-12
It can produce high-temperature
PCB board size(cm): 3.1 x 4
It is convenient for fans to install
high efficiency
Weight(g): 20This product is shipped as unassembled and requires soldering to be completed. You will need to do the soldering yourself.
Voltage Max: 16V
Maximum current rating: 30 A
Practical Continuous Current: 14 A
Current sensing available to Arduino analog pin
MOSFET on-resistance: 19 mΩ (per leg)
Maximum PWM frequency: 20 kHz
Thermal Shutdown
Undervoltage and Overvoltage shutdown. RoboticsBD
Operating Voltage: 3.3V
Resolution: 128 × 64 pixels
Communication Interface: SPI (default)
Display size: 55.01 × 27.49mm
Driver: SSD1309Note: The component, colour & shape of the module may vary depending on our stock rotation.
5V Dc Power Supply
Power indicator light
The comparator output is light
High Sensitivity Sound Microphone Sensor Detection Module
Electric condenser microphone
Microcontroller: ESP8266EX
Operating Voltage: 3.3V
Digital I/O Pins: 11 (all I/O pins have interrupt/PWM/I2C/one-wire capability, except for D0)
Analog Input Pins: 1
Flash Memory: 4MB
On-Board Switching Power Supply:
Input Voltage Range: 9V to 12V
Output: 5V at 1A Max
Onboard precision microcurrent transformer.
Onboard sampling resistor.
The module can measure AC currents less than 5A, the corresponding analog output 5A/5mA.
The Arduino Nano I/O Sensor Shield is an expansion board compatible with various microcontrollers, offering multiple power input options and easy sensor connections.
Display Resolution: 200 x 200
Display Screen Color: Black and White
No backlight so keeps displaying last content for a long time even when the power is down
Ultra low power consumption, basically power is only required for refreshing
SPI interface, for connecting with controller boards like Raspberry Pi/Arduino/Nucleo, etc.
SD card interface works with FAT16 or FAT32 formatted cards. 3.3v level shifter circuitry prevents damage to your SD card.
Real-time clock (RTC) keeps the time going even when the Arduino is unplugged. The battery backup lasts for years.
Included libraries and example code for both SD and RTC mean you can get going quickly Prototyping area for soldering...
General-purpose HDMI display,
Connecting computers, TV boxes, Microsoft Xbox360, SONY PS4, Nintendo Switch and so on
Can be used as Raspberry Pi display that supports Raspbian, Ubuntu, Kodi, Win10 IOT, single-touch, free drive
Can be used as PC monitor, support Win7, Win8, Win10 system (No touch Function)
The Nano Expansion Board is a compact and convenient IO shield designed specifically for the Arduino Nano development board. It breaks out all essential digital and analog pins onto clearly labeled pin headers, enabling quick prototyping and streamlined module connections. Whether you're building a simple project or a complex system, this expansion board...
Onboard precision microcurrent transformer.
Onboard sampling resistor.
The module can measure AC currents less than 5A, the corresponding analog output 5A/5mA.
Rated input current: 5A
Rated output current: 5mA
Change: 1000: 1
The linear range: 0 ~ 10A (100 ohms)
Linearity: 0.2%
Stackable design, easy to plug into the ARDUINO development board.
Coupled with the Arduino Bluetooth Bee Bluetooth module, and other Bluetooth devices can communicate Wirelessly.
3.3v and 5v dual power output.
3.3v and 5v IO compatible.
USB2.0 protocol.
The XH-M203 Automatic Water Level Controller Module is an intelligent and efficient solution for managing water levels in tanks, pools, and reservoirs. Designed for automatic water level monitoring and pump control, this module eliminates the need for manual intervention. When the water level drops below a set threshold, the module activates the pump to...
801S Vibration Sensor with gold alloy plated shock sensor for durability
Provides both analog and TTL level digital signal outputs
Adjustable sensitivity for micro shock detection and real-time vibration monitoring
Onboard LM393 comparator IC for reliable performance
Ideal for monitoring mechanical vibrations, displacement, and unbalance in systems
Operating Voltage: 12V DC
Equipped with high-current relay 10A 250VAC / 10A 30VDC
It can control both AC and DC appliances such as Solenoids, Motors, lights, fans, etc.
High-quality screw terminals (Terminal Block) provided (C, NC, NO) for quick and easy connection.
Freewheeling diode to protect your microcontroller.
Input Signal Pin connected to Burg...
The module can detect the surrounding environment of the humidity and temperature
High reliability and excellent long-term stability
The output from the digital output
Humidity measuring range: 20%~90%RH(0~50 degree (temperature compensation).
Temperature measuring range: 0~+50degree.
Humidity measurement accuracy: ±5.0%RH.
Temperature measurement...
Based on the W5100Based on the Wiznet W5100 allows an Arduino board to connect to the internet.
Stackable Design, can directly be supported by for Arduino official Ethernet Library.
Supports up to four simultaneous socket connections
Can be used to store files for serving over the network.
Can be accessed using the Mini SD TF library.
IEEE802.3af...
RS485 is an industrial standard for long-distance, anti-interference, and reliable communication. The Arduino RS485 shield, specially designed for the Arduino Uno board. It converts UART/Serial protocol to the RS485 protocol. This RS485 board allows Arduino talk to industrial devices.
In contrast to RS-422, which has a single driver circuit that cannot...
Support TCP/IP protocol: TCP, UDP, ICMP, IPv4 ARP, IGMP, PPPoE and Ethernet
Built-in 10BaseT/100BaseTX Ethernet physical layer
Support automatic communication handshaking(full duplex and half duplex), Support automatic MDI/MDIX, automatically revise signal polarity
Support ADSL connection (support PAP/CHAP certification mode in PPPoE protocol), Support...
SIM7600G-H 4G (LTE) is an Arduino Shield that supports 2G/3G/4G, GNSS satellite positioning, and LTE CAT4 (150Mbps DL, 50Mbps UL). It features a standard Arduino pinout and is compatible with Arduino UNO, Leonardo, Mega, and other main controllers. It supports LTE-TDD/LTE-FDD/WCDMA/GSM frequency bands, GNSS positioning with GPS, CLONASS, BD, and other...
Works with standard (dual 5/3.3V) and 3.3V-only (for example, Pro Arduino) boards.
Complies with USB Specification Revision 2.0 (Full-Speed 12Mbps Peripheral, Full-/Low-Speed 12Mbps/1.5Mbps Host)
Supports HID devices, such as keyboards, mice, joysticks, etc.
Compatible with Mass storage devices, such as USB sticks, memory card readers, external hard...
USB Type: Type-A to Type-B
Weight: 80 gm.
Length: 1m / 3.2Feet Long cable for easy work
Fully compatible with the PC.
Molded strain relief and PVC over-molding to ensure a lifetime of error-free data transmissions.
Manufacturer: Arduino Officials
Micro-controller : ATmega328P.
Operating Voltage: 5V.
Input Voltage (recommended) : 7-12V.
Digital I/O Pins: 14 (of which 6 provide PWM output).
Analog Input Pins: 6.Imported from DFrobot (04-June-2025)Made in ItalyArduino SKU: A000066
3D Printed Bumper: Designed for Arduino Uno R3 boards
Short Circuit Protection: Prevents accidental short circuits on conductive surfaces
Secure Press-Fit: Ensures a snug fit while allowing easy removal
Scratch Protection: Protects surfaces from scratches caused by the board
Arduino Uno R3 is not included.
Based on the W5100Based on the Wiznet W5100 allows an Arduino board to connect to the internet.
Stackable Design, can directly be supported by for Arduino official Ethernet Library.
Supports up to four simultaneous socket connections
Can be used to store files for serving over the network.
Can be accessed using the Mini SD TF library.
IEEE802.3af...
Wiznet Compact W5500 Network Module - 10/100 Base T
WIZ850io is a compact size network module that includes a W5500 (TCP/IP hardwired chip and PHY embedded), a transformer and RJ45. It can be used as a component and no effort is required to interface W5500 and Transformer. The WIZ850io is an ideal option for users who want to develop their Internet...
Contactless transmission of data and supply energy (no battery needed)
Operating distance: Up to 100mm (depending on antenna geometry) RoboticsBD
Operating frequency: 13.56MHz
Data transfer: 106 kbit/s
Data integrity: 16 Bit CRC, parity, bit coding bit counting
Anticollision
Typical ticketing transaction: <100 ms ( including backup management)...
Arduino Opta, specially designed for PLC engineers, is a secure, easy-to-use micro PLC with industrial IoT capabilities.
Opta is equipped with frequently used networks and protocols in multiple industries, and supports both Arduino sketch and standard PLC languages, including LD (Ladder Logic Diagram) and FBD (Function Block Diagram). And its powerful STM32H747XI dual-core Cortex-M7 + M4 MCU allows users to perform real-time control, monitoring and implement predictive maintenance applications.
