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Essential Resources for NMEA 2000 Development with ESP32
This blog post is intended to highlight additional, practical resources that can significantly improve the development workflow for NMEA 2000 devices based on the ESP32 processor. Once the fundamentals of CAN bus and NMEA 2000 are understood, progress often depends on having the right reference material and the right diagnostic tools. The following resources address [...]
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 [...]
ESP32 NMEA 2000 Sensor Integration: Qwiic I2C Sensors for Marine Applications
The ESP32S3 CAN‑Bus Board with NMEA2000 Connector by Copperhill Technologies is a compact, high-performance development board based on the dual-core ESP32-S3-WROOM-1 microcontroller with integrated Wi-Fi and Bluetooth connectivity. Designed expressly for embedded and marine applications, it includes 8 MB of PSRAM and 8 MB of flash, a USB-C port for power and programming, RGB status [...]
Why the PiCAN-M with SMPS Cannot Power Raspberry Pi 5 — and the Simple Workaround
The PiCAN-M HAT from Copperhill Technologies is a specialized interface developed exclusively for marine applications and specifically targets NMEA 2000 networks. NMEA 2000 is the standard backbone for modern marine electronics, used to interconnect engines, chart plotters, sensors, and onboard monitoring systems. In its standard version without SMPS, the PiCAN-M HAT is powered directly from [...]
MicroPython on ESP32: Beginner's Guide to Programming, Setup, and IoT Project Basics
MicroPython is a lean re-implementation of Python 3 designed for microcontrollers. It provides an interactive REPL(Read-Evaluate-Print Loop) and supports a large subset of the Python standard library, making embedded programming more accessible to those familiar with Python. In simple terms, MicroPython lets you write Python code to control hardware like the ESP32 without the need [...]
Local Interconnect Network (LIN) in Automotive: A Beginner’s Guide
The Local Interconnect Network (LIN) is a low-cost, low-speed serial bus system used in modern vehicles to communicate between electronic components. It was introduced as a complement to the faster Controller Area Network (CAN) bus, targeting applications where high performance isn’t needed and cost is critical. LIN operates over a single wire (plus ground) at [...]
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 [...]