Seeed Studio CAN-Bus Shield V2 Compatible with Arduino for Controller and Transceiver, Arduino Shield Adopts MCP2515 and MCP2551.

works good with the Arduino giga and mega, and good documentation

Worked perfectly! Was able to use this shield to open and close my homemade truck bed cover using my OEM key fob by intercepting CAN messages.

Works fine so far. Been using it with the canhacker program paired with my uno.

Bien

I'm pretty inexperienced with Arduino and CAN, but I had this up and running and pulling data from a GMLAN bus (OBD2-CAN) within an hour. I had no luck with the Seeed libraries, the code is beyond my understanding and the examples don't compile. I got it working with the sandeepmistry OBD2 library after changing CS pin from 9 to 10 by cutting/soldering the pads on the bottom of the board. Loaded the example code and Bam! it's receiving ECU/engine data. Minus one star because the DB9 connector shorts out on the standard UNO USB connector. Clearly was designed for Seeeduino's own board.

Works great. The SD card holder has a door that swings open. They should probably document this somewhere because its not immediately obvious.

So far I've been incredibly disappointed in the documentation and support for this product. The board itself seems well constructed, but I have yet to get it working. The jumper pads on the back of the board do not look like the pads on their documentation. On the site it shows that the jumpers only need to be soldered if you want to change the default configuration, but my board had no jumpers connected out of the box. I'm assuming this means I have to solder all the jumpers before I can get it working. As is this board is useless.

I purchased this to build a CAN-driven tachometer. I used it with an Adruino Uno, a DB9 to OBDII cable, and a 4-digit 7-segment display (Tm1637 driver). I was able to get the project done quickly with the available open-sourced libraries.

Months of tinkering with other mcp2515 boards, changing crystals to 16MHz, trying different libraries, starting over, buying a knock off shield, all didn't work trying to talk to megasquirt via can bus. finally this seeed studio can shield and an arduino UNO knock off is working.

The item arrived on time. I uploaded a test program and ran it but have not hooked it up to my car's OBD2 port yet but i am sure it works fine

I am still pretty new to arduino and soldering stuff. I was also thinking the saulders were missing. I checked them with the multimeter and some were connected even though I could not visually see it. I use the box cutter to separate them all and confirmed that with a multimeter. I soldered them all back mostly to default except for the can bus that I did not want on obd2. The supporting documentation is terrible on the website but I did manage to find a "v2" document that actually looked like the "v2" that I had received. I did lots of extra Googling and finally got it working. All the defaults worked with my mega 2560 r3. I think there's some other can bus shields out there that have better documentation and would have been a better choice. You can also just buy the individual parts and build it yourself. I needed something quick and it worked so it's good with me.