Description: The CAN-BUS Shield provides your Arduino or Redboard with CAN-BUS capabilities and allows you to hack your vehicle. This shield allows you to poll the ECU for information including coolant temperature, throttle position, vehicle speed, and engine rpms. You can also store this data or output it to a screen to make an in-dash project.
It uses the Microchip MCP2515 CAN controller with the MCP2551 CAN transceiver. CAN connection is via a standard 9-way sub-D for use with OBD-II cable. Ideal for automative CAN application. The shield also has a uSD card holder, serial LCD connector and connector for an EM506 GPS module. These features make this shield ideal for data logging application.
Note: A DB9 Cable is not included with this shield. Please be sure to check Recommended Products section below for a recommended cable to use with this board.
Note: This product is a collaboration with SK Pang Electronics. A portion of each sales goes back to them for product support and continued development.
Based on 12 ratings:
4 of 4 found this helpful:
I used it for interfacing with a 125k vehicle CAN bus. Soldering the headers were fairly easy, but I struggled with the 9-way OBD-II to CAN conversion. I’ll agree with another review when it come to making pins 2 and 7 the standard Lo and Hi. Let the few who need OBD-II struggle with the conversion.
2 of 2 found this helpful:
With the OBD2 accessory cable an an Uno, I was able to eavesdrop on my car’s CAN-BUS.
2 of 2 found this helpful:
After fighting with the libraries for almost a week i finally got it right to retrieve some usable data from the car. I switched to another library to confirm the speed at which my car was sending data. i still couldn’t see “human” readable data until i found a fork of the sparkfun library, after some modifications to the sketch i was able to use it. As for the shield itself, i would have preferred if it was shipped with headers. i only realized this after my delivery and needed to place a second order only for the headers.
2 of 2 found this helpful:
Documentation for this device seems to be lacking. I ended up purchasing a pican shield for the pi2.
7 of 7 found this helpful:
Ordered one to build a display to show MPH, RPM, Engine temperature and Throttle. I made some modifications to Canbus Library to show imperial measurements instead metric ones. Added a 4 line I2C LCD display and it worked great. Board also supplies 12 V to the un regulated input of the UNO. Don’t forget to order the ODB to DB9 cable.
6 of 7 found this helpful:
I like how many things are packed into it. Price is very fair. Really like the option to cut the board and make the DB9 connector use pins 2 and 7 like any professional CAN equipment uses. This option is why I bought the board. I really didn’t like that the Seeed CAN shield didn’t have this option.
Cons: Chip select pin can not be changed. The library doesn’t look like it has a simple option for this either. Switched to the coryjfowler library. I really wish you would have at least done what the Seeed CAN shield did and give me one other pin as a choice. Had to add 120ohms to make it work on a bench. The Seeeeeed shield gave me screw terminals to do this, but not this board. Also, wish that I didn’t have to modify the board to make it work with industry standard pins 2+7 on the DB9. Lastly, the ad doesn’t mention that the shield is completely bare. Please at least update the listing notes to suggest that you buy headers for it.
This board is probably better for the person that wants all the extra features, but if you just want a CAN shield and use CAN regularly, I wouldn’t buy it if you already have a Seeed shield. You’re better off hacking up the Seeed board to support pins 2 + 7 if you already own one.
I only used the CAN interface to debug another project..
Packs a lot of great stuff into a small design. While it’s great to have all the features, I think most of it is overkill, like the GPS, Memory card, joystick and reset button and all the supporting components for these items. This board could probably be 1/8 of its current size and stack only the couple of pins it needs, leaving the arduino board free to be used for other purposes. While it is great that it can be stacked on top of the arduino or red board, it would also be nice if there was an enclosure for it. Other than that it is a great board with a lot of nice features.
Is there one of these commercially available? I can build one but am having trouble finding a pigtail for the automobile side. Thanks in advance for any help. mcb
BREAKING NEWS: Found them, they weren’t in the recommended products list
With the interface chip in between the CAN bus adapter and the arduino, I’m not completely convinced that I’m not losing CAN packets at the .5 Mbit rate. The micro SD card slot doesn’t latch most of the time and I end up having to make a dozen or more attempts to insert a card before it finally latches. The spring-loaded slot is not good and a compression slot would be much better.
Simple interface, got my project up and running in no time. At first I didn’t think I would use the joystick, but I have implemented it to send test codes out, very convenient. I have not used the sd card slot yet. Future plans include getting the lcd attached if I can find the 3 pin quick connect plug.
My dream comes true with this shield. I’ve a project on my car, and this is the best solution to realize this dream, cheapy. I used uSD card on it, works perfectly. I have an Arduino Uno to do some tricks.
If you want to try using the CAN-BUS Shield for applications not related to your car, there’s a guide here that may get you going in the right direction.
As a shield, this will not work directly on an Arduino Mega2560, Arduino Due, etc, because the SPI pins are moved on those boards. However, if you absolutely need the Mega, You would need to redefine the pins, and run a jumper from the shield to one of the supported pins, which you can find here https://www.arduino.cc/en/Reference/SoftwareSerial. After redefining the pins, you can always bend the pins if you soldered to the shield and reroute them similar to this tutorial => http://mcukits.com/2009/04/06/arduino-ethernet-shield-mega-hack/
As a sanity check, this Instructable has some code that dumps whatever is on the CAN bus to a serial terminal. It’s useful to see if the CAN Bus Shield is working.