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Compact Controller Based On Raspberry Pi Compute Module 3+ Supports Modbus RTC And Modbus TCP Programming

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Kunbus RevPi Compact

The new  RevPi Compact from KUNBUS is the latest addition to the RevPi product suite of industrial PCs. It represents a robust and cost-effective compact controller based on the Raspberry Pi Compute Module 3+, and it comes with a wide range of connectivity options and functions.


The Raspberry Pi Compute Mode 3+

Raspberry Pi Compute Module 3+

The  Compute Module 3+ (CM3+) is a Raspberry Pi 3 Model B+ in a flexible form factor, designed for industrial applications.

The CM3+ Compute Module contains the fundamental parts of a Raspberry Pi 3 Model B+ (the BCM2837 processor and 1GB RAM) and an optional eMMC Flash device of 8GB, 16GB, or 32GB, the equivalent of the SD card in the RPi.

  • Broadcom BCM2837B0, Cortex-A53 (ARMv8) 64-bit SoC @ 1.2GHz
  • 1GB LPDDR2 SDRAM
  • 8GB/16GB/32GB eMMC Flash memory, or a Lite variant without eMMC Flash memory

All this integrates onto a small (67.6mm × 31mm) board that fits into a standard DDR2 SODIMM connector. The Flash memory is connected directly to the processor on the board, but the remaining processor interfaces are available via the onboard connector pins. The user gets the complete flexibility of the BCM2837 SoC, i.e., many more GPIOs and interfaces are available than the standard Raspberry Pi, and designing the Module into a customized system is straightforward.



The RevPi Compact connects to sensors and actuators via eight digital and analog inputs, eight digital and two analog outputs. Thanks to two Ethernet ports with unique MAC addresses, the device can simultaneously communicate with two separate networks. Furthermore, there are four USB ports and a four-pole RS485 interface.

The low profile design allows device installation in sub-distribution systems, which are common in building automation. The operating system is an adapted Raspbian with a real-time patch. Application programming is accomplished via Node-RED, Python, or directly in C. The configuration allows the use of popular industrial protocols such as Modbus RTU and Modbus TCP. Professional soft PLC and SCADA software for control and visualization are also available.

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Raspberry Pi 3 B+ System With Dual Isolated CAN Bus Interface

Raspberry Pi 3 B+ System With Dual Isolated CAN Bus Interface

Our Raspberry Pi 3 System With CAN Bus Interface (PiCAN2) comes with a pre-installed Raspbian operating system.  

The PiCAN2 DUO ISO board provides two independent isolated CAN-Bus channels for the Raspberry Pi. It uses the Microchip MCP2515 CAN controller in combination with the Texas Instruments ISO1050 isolated CAN transceiver. Connections are made via 4 way screw terminal plugs.

There is an easy-to-install SocketCAN driver, and programming can be accomplished in C or Python.

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Raspberry Pi Compute Module 4 Comes With PCIe Support And Multimedia Interfaces

Newark, a global distributor of electronic components, products, and solutions, introduced the new Raspberry Pi Compute Module 4 (CM4). The CM4 module delivers the power of the Raspberry Pi 4 to the compute module family. It is supplemented by two accessories, the Compute Module 4 I/O (CM4IO) board and the Compute Module 4 Antenna Kit. The CM4 [...]

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Design Concept: Raspberry Pi System With Four Isolated CAN Bus Interfaces

Copperhill Technologies currently develops their  JCOM.CAN.QUAD product, a galvanically isolated four-channel CAN-to-USB gateway board. More precisely, two of the interfaces support Classical CAN, while another two operate as CAN FD (Flexible Data Rate) ports.  The board comes with two UART ports, which allow the use of external LIN Bus breakout boards, such as our Isolated LIN Bus Breakout [...]

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PiCAN FD Functionality Test - CAN Bus FD Duo Board with Real Time Clock for Raspberry Pi

CAN FD (CAN with Flexible Data-Rate) is an updated version of the CAN 2.0B protocol. It takes into account the requirement of the automotive industry to make Classical CAN faster. To achieve that, two principles have been introduced: Faster transfer of the data frame – the Arbitration Field (ID and Acknowledgement) remain unchanged so that the arbitration [...]

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Sensor Networks with XBee, Raspberry Pi, and Arduino: Sensing the World with Python and MicroPython

This book explains how to build sensor networks with Python and MicroPython using XBee radio modules, Raspberry Pi, and Arduino boards. This revised and updated edition will put all of these technologies together to form a sensor network and show you how to turn your Raspberry Pi into a MySQL database server to save sensor data. The reader [...]

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Eight Channel RTD Data Acquisition HAT for Raspberry Pi

Sequent Microsystems introduced its Mega-RTD eight channel RTD data acquisition hat for the Raspberry Pi. The Mega-RTD HAT is a stackable expansion card for the Raspberry Pi. It offers a compact and inexpensive solution for reading and storing data from up to 64 RTD-100 thermocouples. The HAT represents an open-source design, including schematics. There are eight channels [...]

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Industrial-Strength IoT Kit With Battery-Backed RTC Chip For Raspberry Pi

Advantech, a manufacturer of embedded platform solutions, announced its UNO-220 Raspberry Pi-ready industrial-grade gateway kit. In keeping with current Internet-of-Things (IoT) technology trends, UNO-220 is suitable for customers using the Raspberry Pi single-board computers (SBCs) for creating dedicated IoT applications. Equipped with a micro SD card with OS image and Raspberry Pi HAT I/O board, the UNO-220 [...]

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CODESYS Control For Raspberry Pi Allows PLC Programming According To IEC 61131-3

CODESYS is a PLC programming suite used by automation specialists as an environment for the development of controller applications. It is an IEC 61131-3 programming tool developed by the Germany-based company, 3S (Smart Software Solutions), providing users with integrated solutions that optimize the engineering of automated solutions. It represents a platform-independent development environment that is compatible [...]

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Raspberry Pi Cookbook Includes Internet-Of-Things (IoT) Projects

With millions of new users and various improved models, the Raspberry Pi ecosystem proceeds to grow, along with more questions regarding the RPi’s capabilities. The third edition of this successful cookbook presents more than 200 hands-on methods that explain how to run this tiny low-cost computer with Linux; program it using Python; hook it up to [...]

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Practical Guides To Mastering Embedded Linux Programming

Mastering Embedded Linux Programming: Unleash the full potential of Embedded Linux with Linux 4.9 and Yocto ProjectThis complete guide shows the technologies and techniques needed to incorporate Linux into embedded systems. The reader will begin by learning about the essential elements that underpin all embedded Linux projects: the toolchain, the bootloader, the kernel, and the [...]

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