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ESP32 Development Board with NMEA 2000 & NMEA 0183 HAT
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The ESP32 processor, integrating peripherals such as UART, CAN Bus, WIFI, and Bluetooth, allows a wide range of applications, and the low price adds to its popularity.
There are various ESP32 development boards available in the market, such as the ESP32-WROOM-32, as shown to the left. However, compared to popular systems like the Raspberry Pi or Arduino, the hardware resources, i.e., additional peripherals, are limited.
Consequently, the thought of tapping into the vast resources of the Raspberry Pi or Arduino system makes sense.
The above picture demonstrates the setup that I used to connect an NMEA 2000 and NMEA 0183 HAT with an ESP32 development board.
But, first of all, let me refer to two previous posts I wrote on the topic:
- Extending ESP32 Functionality by Using Raspberry Pi HATs...
- ESP32 Triple CAN Bus Application Through Adding Two MCP2515 Ports...
In the above setup, I am using our PICAN-M Board. The PICAN-M (M = Marine) is a Raspberry Pi HAT with NMEA 0183 and NMEA 2000 connection. The NMEA 0183 (RS422) port is accessible via a 5-way screw terminal. The NMEA 2000 port is accessible via a Micro-C connector. The board comes with a 3A SMPS (Switch Mode Power Supply), allowing to power the Raspberry Pi plus HAT from an onboard power source (12 VDC).
The above referenced posts explain the SPI connection between the ESP32 and the HAT. So, please take your time to read them for more information.
The software I used is available at:
https://github.com/coryjfowler/MCP_CAN_lib...
Another helpful resource is the PICAN-M schematics (PDF) as it shows the SPI connection plus the power sources for 5 VDC and 3.3 VDC. It also shows the serial connection (RX, TX) to connect to the NMEA 0183 port.
For more information on the NMEA 0183 port, see also my post:
Testing NMEA 0183 For The PICAN-M - NMEA 0183 & NMEA 2000 HAT For Raspberry Pi...
Last, but not least, I am adding the ESP32 Dev Kit Pinout. Naturally, you can use any other ESP32 system for the same application, but please assure that you have all necessary signals available.
Electronics Projects with the ESP8266 and ESP32: Building Web Pages, Applications, and WiFi Enabled Devices
Copperhill Technologies highly recommends using this book for your wireless application projects. Yes, many good books and free online resources are available these days, but this is the book we are using. It made our approach to Bluetooth, BLE, and WIFI a breeze. Programming wireless applications without hassles was fun, and we will share them on this web page.
Projects throughout the book utilize the wireless functionality and processing power of the ESP microcontrollers. Projects are built in the Arduino IDE, so you don't need to download other programming software. In addition, mobile apps are now ubiquitous, making the app build projects of the book very relevant, as are the web page design projects.
In Electronics Projects with the ESP8266 and ESP32, you'll see how easy and practical it is to access information over the internet, develop web pages, build mobile apps to remotely control devices with speech recognition, or incorporate Google Maps in a GPS route tracking app. More Information...
Extending ESP32 Functionality by Using Raspberry Pi HATs
The ESP32 processor, integrating peripherals such as UART, CAN Bus, WIFI, and Bluetooth, allows a wide range of applications, and the low price adds to its popularity. There are various ESP32 development boards available in the market, such as the ESP32-WROOM-32, as shown to the left. However, compared to popular systems like the Raspberry Pi or [...]
ESP32 Triple CAN Bus Application Through Adding Two MCP2515 Ports
The first question that may arise when talking about accessing the MCP2515 CAN Bus controller per ESP32 may be, "Why would you need an MCP2515 controller when the ESP32 comes with an internal CAN port?" Yes, I found this question in one of the online forums while researching this particular topic. The answer is easy: [...]
ESP32 Project: USB to Bluetooth Gateway
The ESP32 processor allows the integration of Wi-Fi, Bluetooth, and Bluetooth LE (BLE) for a wide range of IoT (Internet of Things) applications. Using Wi-Fi ensures connectivity within a large radius. At the same time, Bluetooth allows the user to easily detect (with low-energy beacons) a module and connect it to an Android/iOS smartphone or [...]
ESP32 Based CAN Bus, SAE J1939 and NMEA 2000 to Bluetooth Gateway
The following is a follow-up on our post Controller Area Network (CAN), SAE J1939, NMEA 2000 Wireless Module for IoT and ELD Applications. The CAN Bus, SAE J1939 and NMEA 2000 to Bluetooth Gateway is the first product of a new series of wireless gateways for IoT (Internet of Things), ELD (Electronic Logging Devices), and other applications. At the [...]
A New Generation of SAE J1939 Gateway, ECU Simulator, and Starter Kit
Like many other businesses, we have to deal with the global shortage of electronic components. For instance, the NXP LPC 17xx processors we used for our SAE J1939 gateways and the starter kit are not available at this time. Even worse, there is no reliable information if/when production resumes. This situation forced us to rethink [...]
ESP32 Starter and Development Kits for Building Bluetooth and WiFi Enabled IoT Devices
The integration of Wi-Fi, Bluetooth, and Bluetooth LE allow a wide range of applications with ESP32 modules. Using Wi-Fi ensures connectivity within a large radius, while using Bluetooth allows the user to easily detect (with low-energy beacons) a module and connect it to a smartphone. The chips add priceless functionality and versatility to your applications [...]
SAE J1939 Starter Kit and Network Simulator - New Hardware Variant Using the ESP32 Processor
Our SAE 1939 Starter Kit And Network Simulators allow the experienced engineer and the beginner to experiment with SAE J1939 data communication without connecting to a real-world J1939 network, i.e., a diesel engine. To establish a network, you need at least two nodes. That fact applies, especially to CAN/J1939 nodes. A single CAN Bus controller [...]
CAN Bus Development with ESP32-WROOM32 Development Board
This post will demonstrate how to add a CAN Bus port to the ESP32-WROOM32 development board, i.e., regarding hardware and software. Download this post as PDF... As a matter of fact, we already offer a hardware utilizing the ESP32 processor and an onboard CAN Bus transceiver as shown in the image to the left. The ESP32 WiFi, Bluetooth [...]
Embedded CAN Bus, SAE J1939, NMEA 2000 Development With ESP32
Like many businesses in the CAN Bus marketplace, we have struggled with the global shortage of electronic components. For instance, our SAE J1939 gateways are equipped with NXP processors, mainly the LPC1754 and LPC1768. Unfortunately, both processors are currently unavailable, and they come with remarkably long delivery times that go well into next year. We [...]