Sniffing any CAN-bus on the cheap(5$) with Arduino, Tested on an VW Polo 9N3

Part 2 is now online:

MCP2515 Arduino Library:

my edited fork of the Library:

The used CAN-Bus Board for just 1,40€:

CANhacker Software

Unterstützt durch Produktplazierungen

[thorntontarr]

Quite thorough, more than I expected, you are a good detective, engineer and hacker.

[MultiMischka]

Yea it is quit difficult without the CAN-Matrix to decode the Messeges with the Signals in it. VW keep this closing like hell. Your way with try and error is really nice. Keep going

[iconoclad]

Coming home I change my auto to 3rd gear to slow for my turnoff but after the turn I forget to switch back to drive and drive the remaining 2km in the wrong gear. I would like to make a simple audio alert or maybe flash a light on the console. This video might help me figure out how to do that. Ultimately I would like to aim an ESP32 camera at the white line on the road side and use this to auto steer the car on highway trips.

[程晨-dt]

The bluepill stm32f103 already has CANBUS controller included.So you don't have to use mcp2515.You can connect TJA1042 to bluepill with only two wires. And also, there is a working lib for it

[rocket__fox]

bei der Beispielschaltung hast du 5:22 ist bei der Patine mcp2515 ein jumper auf der Emfpänger platine. wie ist es denn bei dem finalen sniffer 14:14 benötigt die Patine mcp2515 dann auch einen wiederstand? über usb können daten in den Bus gesendet werden es ist also beides. das ist mir nicht klar

[OmarMekkawy]

That's really nice, More contents on CAN bus please.

[mohamadpiroozi]

Hello dear
It was an honor to watch your training video.
I have a question
How to activate relay module by using mcp 2515 and arduino nano board at specified engine speed, for exam 4000 rpm? plz guid me by make a short clip. thnx alot...

[TheFallenAngel]

For anyone getting the forbidden error go to the url after you get the error and delete ".zip" then hit enter.

[RodrigoOliveira-tbzf]

You looked around a bit but eventually you found it. Amazing work

[GTO]

Thanks! SavvyCAN also added support for this protocol 5 days ago

[rftech]

Hi you gave me a few ideas. I have a radio like that it has CAN built in the radio. there is an app to set the address and bits. I want to monitor my 2019 Jeep JL. I like the sleep function.

[RandomTorok]

I bought an older electric car last summer. But being older it doesn't have the fancy features to allow you to connect the car to a cell phone. So, I'm going to try and build an ESP32 device that will read the canbus and send me data. First thing I want to monitor is charge level so that I can tell when the charging cycle has finished, I'm fortunate to have 2 charging stations at my place of work.

[martoel]

Hello my friend. I have a nano arduino and a CAN bus MCP2515 interface. I made the connection like yours to the nano and I can connect fine to IDE and Canhacker, I can also upload the sketch without any issues the problem is in the canhacker I can not see any data. Tried connect on desk, directly to the comfort can bus on the cluster and also to the ODB connector. Any advice? I only made a modification to the canhacker.h from 16mhz to 8mhz in the CAN CLOCK portion. Any advice where to look?

[jamesgeorge]

You should see some 2018 and newer stuff with 3 CAN networks, multiple LIN bus, multiple gateway, secure gateway, ethernet and wireless networks. Good times !!

[RobertP]

Hi Aaron, thanks for your vid, I'm just starting to learn CAN Bus my goal is to sniff/decode/display some missing info on my EV car by using Arduino Uno + shield + screen thanks again.

[ronkloiber]

Great information.. I just ordered some MCP2515. I have a problem with my Jeep Compass where remote door locks stopped working. I have a aftermarket remote starter that works by pressing LOCK on the remote 3 times, and signal is sent over CANBUS. Hoping this may show me if signal is on the BUS. Do you know if your car shows LOCK/UNLOCK?

[wkl]

wow!! This is great work!! I have a few questions. 1) do I need to pick a baudrate before I connect it to the car canbus or the sketch or canhacker will auto detect? 2) I'm using sparkfun canbus and it takes power from OBD2. would it be a problem to connect the USB into PC together?

[changchung]

Really nice video. Thanks for share. Let me ask you something. What I need to read lights signals from a car and send those data signals to a arduino board with a Led library to make smart Leds act with parking lights, turn signals, brake, drl, dome lights. It could be possible? Thanks in advance

[alibro]

Great video Aaron and thanks for sharing. I have done something similar but I'm very much a novice so your video has given ma lots of new things to try.
I've subscribed and looking forward to more videos about CAN-BUS hacking.
Good luck and thanks again

[somnathsingh]

Great video !!
I am not sure if anyone else has faced similar issues. I did all required changes for 8MHZ but I am not able to receive any data on reading.

I tried sandeep mistry code, there I am able to receive RPM ( example code) but same no output in CANreceiver.

Is there anyway I can figure out the issue ?

Thanks in advance.