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SAE J1939 Functional Safety Communications Protocol
Commercial road and off-highway vehicles, as well as off-road construction machines, frequently utilize J1939-based application layers. In response to the growing need for functional safety, SAE has created specific protocols for CAN CC (classic) and CAN FD: J1939-76 and J1939-77, respectively. An article on the CiA (CAN-in-Automation) website discusses the SAE standards for functionally safe communications on CAN [...]
JCOM1939 Monitor Pro - SAE J1939 Data Monitoring, Recording
Our SAE J1939 to USB/Bluetooth gateway and the SAE J1939 Starter Kit are designed to work seamlessly with our JCOM1939 Monitor Pro Software for Windows, a free download. This combination is key to ensuring your purchased product's optimal performance and overall satisfaction. For your convenience, we have meticulously crafted a dedicated website. This one-stop hub houses [...]
SAE J1939 and OBD2 Heavy Duty Truck Scanner and Diagnostics
DPF Force Regen & Reset for Cummins Caterpillar Engine -- Reset and clean your DPF professionally, quickly, and efficiently to ensure your engine runs smoothly and meets emissions standards. This all-in-one solution saves you money on maintenance costs. The Inspection Record feature records all DPF inspections to help track and manage maintenance schedules. Full System Diesel [...]
The Myth: Controller Area Network is “Too Easy to Hack”
The potential security issues of CAN and its higher-layer protocols attract increased attention from the automotive, control, and medical industries. At first glance, believing that a well-documented standard like ISO 11898 makes it easier to manipulate control functions, whether in an automobile or a medical device such as an MRI or CT scanner, makes sense. [...]
SAE J1939 Data Stream Recording With Raspberry Pi
The Raspberry Pi is undoubtedly the perfect embedded system to read and record data streams from a vehicle bus. The Linux operating system provides the means of an established file management system, and these days there are multiple choices for the appropriate RPi CAN or SAE J1939 hardware interface. In the following project, I am using the Copperhill [...]
USB-CAN PC Interface with SAE J1939-13 Type II Connector
The Leaf Light HS v2 J1939-13 Type II, a standout in Kvaser's Leaf Light product series, is renowned for its reliability and affordability in connecting any CAN network to a PC or mobile computer. It's not just a workhorse but a dependable and cost-effective solution. The Leaf Light HS v2 J1939-13 Type II is a device that [...]
Turn Your Smartphone into a Heavy-Duty Diagnostics Tool
Turn your smartphone into a user-friendly HD diagnostic tool. Download and sync via Bluetooth to the free Diesel Decoder smartphone app to view vital diagnostic and trip data. When your rig throws a fault code, the Diesel Decoder is your reliable companion. It removes the guesswork, guiding you to either clear the codes and continue your journey [...]
Display for Off-Road Vehicle Engines with J1939 interface
The EngineMonitorPlus is a display and control device with a CAN Bus interface designed specifically for use in off-road vehicle engines. It supports the most common messages (PGN, Parameter Group Number) of the SAE J1939 standard. Furthermore, it provides a simple configuration of displayed parameters, errors (DM1), and service messages, allowing the user to configure and [...]
Dual-Channel Linear Actuator Control Module with ESP32
As part of a customer project, I, with the help of a capable hardware designer, developed an embedded system to control two linear actuators, specifically the Thomson Electrac HD model with SAE J1939 interface. The Electrac series of actuators supports two higher-layer protocols (HLP) based on Controller Area Network (CAN): CANopen, and SAE J1939. CANopen is [...]
Diesel Engine Fluid (DEF) Sensor Simulator - Background Info
Before Reading, Please Consider! The DEF Sensor Simulator is not a ready-made product. It was developed by a group of automotive engineers as a concept to bypass faulty DEF sensors. It consists of a list of components with an associated control code, and you will need to assemble the simulator yourself. These engineers selected a component offered [...]