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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 [...]
BLCKTEC 460T OBD2 Scanner Review: A Powerful All-System Diagnostic Tool for Serious DIYers
If you maintain your own vehicle or manage a small repair operation, having a capable diagnostic tool is essential. The BLCKTEC 460T OBD2 Scanner is one of the more advanced consumer-level devices on the market, offering all-system diagnostics, service reset functions, and live-data graphing. Below, we’ll explore what this tool can do, how it performs, [...]
Programming the ESP32: Choosing the Right IDE for Your Workflow
The ESP32 has become one of the most versatile and affordable microcontrollers available today. Whether you’re building IoT devices, automation systems, or experimenting with wireless communication, the ESP32 provides exceptional power and flexibility—dual-core processing, Wi-Fi and Bluetooth connectivity, low-power modes, and robust GPIO capabilities. But before any code can run on an ESP32, developers must decide [...]
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 [...]
SAE J1939 250k/500k Baud Rate Converter – Bridge Between Different CAN Bus Speeds
In modern heavy-duty vehicles and industrial machinery, the SAE J1939 protocol has become the communication backbone for engine, transmission, and diagnostic systems. However, as technology evolves, a challenge often arises: older systems communicate at 250 kbit/s, while newer ones use 500 kbit/s. Integrating devices across these two speeds can be problematic without the right interface. The [...]
Adafruit HUZZAH32 ESP32 Feather Board – WiFi, Bluetooth & Battery Power for IoT Projects
The Adafruit HUZZAH32 Feather Board brings Espressif’s powerful ESP32-WROOM32 module into Adafruit’s popular Feather ecosystem. It offers built-in WiFi and Bluetooth connectivity, dual-core performance, and efficient battery management — making it an excellent choice for Internet of Things (IoT) and embedded applications that demand portability, wireless communication, and reliability. Compact Power for Wireless Projects The HUZZAH32 is [...]
Free SAE J1939 Protocol Stack for ESP32 — Open New Paths for CAN Bus Innovation
We at Copperhill Technologies are excited to announce that we are releasing a fully functional SAE J1939 protocol stack for the ESP32 — and best of all, it’s completely free to use. Whether you’re an engineer, a student, or a maker, this opens up serious possibilities for CAN-bus projects and vehicle network applications — without [...]