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Building NMEA 2000 Devices Has Never Been Easier: Meet the Teensy 4.0 with IPS LCD and NMEA 2000 Connector
Developing NMEA 2000 devices often involves a frustrating combination of custom hardware, display integration, network connectivity, and endless testing. Many engineers and hobbyists spend more time wiring components together than actually developing their applications. The Teensy 4.0 with NMEA 2000 Connector and 240×240 IPS LCD changes that equation completely. By combining a powerful microcontroller, integrated NMEA [...]
Monitoring OBD-II Data Traffic with Raspberry Pi and PiCAN2: A Smart Platform for Vehicle Diagnostics Development
Modern vehicles generate a tremendous amount of diagnostic information through their onboard networks. Whether you're an automotive engineer, software developer, fleet manager, researcher, or simply an enthusiast interested in vehicle data, monitoring OBD-II traffic can provide valuable insights into engine performance, fuel economy, emissions systems, and much more. One of the most practical and cost-effective ways [...]
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 [...]
NMEA 2000 Explained: A Practical Guide to CAN Bus Marine Networking
Modern marine electronics rely on NMEA 2000, a standardized CAN-based network that allows engines, sensors, displays, navigation systems, and monitoring devices to communicate over a single, shared backbone. Instead of point-to-point wiring, NMEA 2000 uses a robust two-wire CAN bus to distribute data efficiently and reliably across the vessel. While powerful and flexible, this technology [...]
Why CAN and LIN Need to Communicate in Modern Vehicles
At first glance, it may seem odd that a vehicle would use two different network technologies—CAN (Controller Area Network) and LIN (Local Interconnect Network)—and even stranger that they need to communicate with each other. After all, why not use one network everywhere and avoid the complexity? The truth is that both CAN and LIN exist because [...]
CAN Bus Programming in Python for Automotive, Industrial Automation, and Robotics
The Controller Area Network (CAN bus) is a resilient, lightweight, and efficient communication protocol originally developed by Bosch in the 1980s for in-vehicle networks. It allows multiple microcontrollers (ECUs) and devices to communicate without a central host, using a multi-master, message-oriented design. Over the decades, CAN bus has expanded beyond its automotive roots into domains [...]
Mastering CAN Bus: Essential Guide to Understanding and Troubleshooting Vehicle Networks
In today’s world of connected vehicles and industrial automation, understanding the details of networked communication protocols has become a pivotal skill for engineers and technicians alike. The book Mastering CAN Scratch: Understanding & Troubleshooting (ISBN/ASIN B0G24Z25RZ) steps into this space by offering a comprehensive, hands-on guide to the widely used Controller Area Network (CAN) bus [...]
Mastering CAN Bus: A Deep Dive into Automotive CAN Bus and In-Vehicle Networks
In an age when vehicles are less about purely mechanical linkages and increasingly about interconnected electronics and networks, the book Automotive CAN Bus and In-Vehicle Networks arrives at exactly the right moment. Graham Stoakes presents what he calls “the digital nervous system of modern vehicles” — and for technicians, students, and enthusiasts alike, this translates [...]
Comparing SAE J1939 Baud Rates: Evaluating 250k vs. 500k for Modern Vehicle Networks
For years, SAE J1939 has been synonymous with heavy-duty vehicle networking, and 250k baud has been the de facto standard. But as vehicles grow more connected and data-intensive—think emissions controls, advanced diagnostics, telematics, and electrification—the question arises: is 250k still enough? The recent discussion around adding a 500k baud rate to the J1939 standard aims to [...]
CAN Bus and SAE J1939: A Beginner’s Guide to Network Design
If you’ve ever worked with industrial machines or diesel engines, chances are you’ve heard of CAN bus and SAE J1939. These two go hand-in-hand when it comes to reliable, real-time communication between control units. Let’s break down the essentials of how these networks are designed and why they matter. What Is CAN Bus? CAN (Controller Area Network) [...]