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ESP32 Sketch: espBerry with Dual MCP2515 CAN Bus HAT
The following describes the connection and the sketch to control a Dual CAN Bus HAT with the MCP2515 CAN controller per the espBerry development board. However, the description applies to any ESP32 module connected to an MCP2515, may it be one CAN port or two, as long as the wiring is as described in [...]
Diesel Engine Fluid (DEF) Sensor Simulator - Background Information and Assembly Instructions
DEF systems in modern diesel engines are crucial to reducing Nitrous Oxide (NOx) emissions and protecting the environment. The DEF system combines software, hardware, and DEF fluid that enable this critical task. Unfortunately, a flood of failures has recently affected one of the elements of the DEF system called the DEF sensor. The origins of [...]
ESP32 with Dual Isolated CAN Port Controls Thomson Electrac Linear Actuator
The above image shows part of a hardware setup for a customer project to control and synchronize two Thomson Electrac linear actuators. See also my posts:Thomson Electrak Linear Actuator with SAE J1939 Interface for Railway and Industrial Applications Thomson... Electrak HD Linear Actuator - Multiple Actuators in the Same Network Will Empty the Batteries... Thomson Electrac HD [...]
Know OBD2 Before You Start That Development Project
We at Copperhill Technologies offer a variety of CAN (Controller Area Network) devices for developing automotive and industrial embedded systems. In that capacity, we receive frequent inquiries regarding OBD2 (Onboard Diagnostics). OBD2, or Onboard Diagnostics Second Generation, is a vehicle diagnosis system found in modern cars and trucks. The OBD2 system collects data from sensors and [...]
Ultrasonic Sensor For Object Detection With SAE J1939 Interface
The XX Ultrasonic sensors (formerly Osisense) by Telemechanique Sensors perform contactless object detection. In addition, they provide an SAE J1939 interface, making them suitable for use in mobile machines. Reliable object detection is feasible regardless of light conditions, the target’s shape, texture, color, or transparency. The sensors can resist harsh environments and operate in diffuse, reflex, and thru-beam [...]
espBerry Project: ESP32 with CH9102F USB-UART Chip for Serial Speed up to 3Mbit/s
I have a project that involves the ESP32-DevKitC development board where the application requires the fast transport of data per USB. The onboard USB-UART bridge chip provides transfer rates of up to 3 Mbps. In addition, the ESP32 has three UART interfaces, i.e., UART0, UART1, and UART2, which provide asynchronous communication, communicating at a speed of [...]
SAE J1939 250k/500k Baudrate Converter with Arduino Due - Source Code Included
The introduction of 500 Kbps (see SAE J1939/14) as an alternative to 250 Kbps, required clarifications on how to solve problems that come with incorporating devices supporting different baud rate settings in the same network. One solution comes with automatic baud rate detection. The SAE J1939/16 document outlines the methods used to detect the baud rate [...]
Programming the Thomson Electrac Linear Actuator - ACM and AFM Data Frames
This post represents an excerpt of Thomson Electrac HD Linear Actuator Motion Control per CAN Bus. The application note is available in eBook and Kindle format, and it includes a free downloadable source code. More Information... In this post, I am explaining the Actuator Control Message (ACM) and Actuator Feedback Message (AFM).Thomson Electrac Linear Actuator - ACM Design The [...]
Programming the Thomson Electrac Linear Actuator - Sleep Mode
This post represents an excerpt of Thomson Electrac HD Linear Actuator Motion Control per CAN Bus. The application note is available in eBook and Kindle format, and it includes a free downloadable source code. More Information... In this post, I am explaining the actuator's sleep mode, which, if not fully understood, may cause some headache during the development [...]
SAE J1939 Display Units for Off-Highway Industrial Engines
The Enginemonitor displays by B-Plus are expansion tools, especially for industrial engines with SAE J1939 interfaces. They enable users to retrieve information from mobile machines and communicate commands directly. Thanks to their robust housings and protection level, the devices can operate directly in the cab and the outdoor area of mobile machines. Due to various device versions, the [...]