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Physical Diagnostics of CAN Networks – Looking Beyond the Protocol
Most CAN Bus troubleshooting starts with software tools. Engineers connect a CAN analyzer, look at message traffic, verify identifiers, and search for protocol errors. While that approach is certainly useful, it often overlooks the most common source of CAN network problems: the physical layer. The CAN protocol itself is remarkably robust. However, damaged cables, poor connectors, [...]
The Hidden Risks of Tampering with a Vehicle’s CAN Bus Network
Modern vehicles are no longer purely mechanical machines. They are distributed computer networks on wheels. A contemporary vehicle may contain dozens of Electronic Control Units (ECUs) communicating over multiple Controller Area Network (CAN) buses, exchanging thousands of messages every second. This creates enormous possibilities for diagnostics, monitoring, and customization. It also creates enormous risks when somebody [...]
Bluetooth 5.0 OBD2 Scanner for iPhone & Android with J1939 Support and Real-Time Engine Diagnostics
Smartphones have changed the way we diagnose vehicles, and compact Bluetooth OBD2 scanners are now replacing bulky handheld scan tools for many drivers. The Bluetooth Wireless OBD2 Scanner available on Amazon is part of that growing trend. It plugs directly into your vehicle’s OBD-II port and turns your phone or tablet into a real-time diagnostic [...]
25 Real-World Projects Using the PiCAN-M Raspberry Pi CAN Bus HAT
The Raspberry Pi has become one of the most versatile platforms for embedded development, and when combined with the PiCAN-M CAN Bus HAT, it becomes a powerful interface for marine electronics, CAN-based systems, and data acquisition applications. The PiCAN-M board connects a Raspberry Pi directly to NMEA 2000 (CAN bus) and NMEA 0183 networks, enabling developers [...]
OBDII Breakout Box Review: The Ultimate Tool for ECU Programming, Protocol Detection, and Automotive Diagnostics
As modern vehicles become increasingly dependent on electronic control units (ECUs), diagnosing and programming automotive systems requires specialized tools. The GODIAG GT100+ OBDII Breakout Box Protocol Detector is designed to simplify this process by providing a flexible testing and diagnostic platform for automotive technicians, locksmiths, ECU programmers, and advanced enthusiasts. Instead of connecting diagnostic tools blindly [...]
Teensy 4.0 NMEA 2000 Development Board with IPS LCD – The Ultimate Marine Electronics Prototyping Platform
In the world of marine electronics and embedded systems, developers are constantly searching for hardware that combines power, flexibility, and ease of integration. The Teensy 4.0 With NMEA 2000 Connector And 240 x 240 IPS LCD delivers exactly that—a compact yet remarkably powerful platform designed for marine instrumentation, CAN-based networking, and real-time data visualization. Whether you [...]
Open-Source Tool Simplifies CANopen Development and Testing
Developing CANopen devices can be challenging. Engineers must configure object dictionaries, simulate nodes, test communication behavior, and verify compliance with the protocol. Traditionally, this process often requires a combination of expensive commercial tools and custom scripts. A recent article by Michael Fitzmayer (Bucher Automation) in the March 2026 issue of the CAN Newsletter describes an open-source [...]
SAE J1939, CAN Bus, and Embedded Networking — All in One Place
If you work with heavy-duty vehicles, mobile machinery, marine systems, or industrial equipment, chances are you have encountered SAE J1939. Whether you are developing embedded firmware, integrating third-party ECUs, or troubleshooting complex vehicle networks, reliable information and robust tools are essential. That is exactly why we created jcom1939.com. A Dedicated Platform for J1939 Engineering JCOM1939.com was designed as [...]
Teensy 4.1 Triple CAN Bus Board with Ethernet and LCD – High-Performance Multi-CAN IoT Gateway Controller
Modern embedded systems increasingly demand more than a single network interface. Industrial automation, vehicle integration, marine electronics, energy systems, and IoT gateways often require simultaneous access to multiple CAN networks while also maintaining Ethernet connectivity for cloud access, remote diagnostics, or data logging. The Teensy 4.1 Triple CAN Bus Board with integrated 240x240 LCD and [...]
Raspberry Pi and PiCAN-M in Marine NMEA 2000 Systems: Power Supply Considerations
Single-board computers based on the Raspberry Pi have become common building blocks in modern marine electronics. When combined with PiCAN-M, they are frequently used as onboard data gateways for applications such as Signal K and OpenPlotter, translating NMEA 2000 traffic into IP-based data streams, dashboards, and logs. In practice, most field issues reported in these systems [...]