Hello, I’m new to the Arduino and never worked with it. Now I bought a UNO R3 and a elcrow canbus shield.
The idea is to get the canbus information from one car and then save it and send it continuously to an other car. The data can be the same signal as the car with the recorded signal. I searched the web and forums but didn’t get the information what I can use. The other car needs the signals to think the engine is running. But is it possible to wire the uno and canbus shield that they start sending the signal when the power gets on without using a laptop. The canbus shield have a sd slot.
The first thing you need to do is get a CAN BUS library installed. There are several available. Download one and install it. It will come with examples. Get the examples working. Slowly adapt them to do what you want. It seems like you want a data logger to capture car1 output and then turn it into a playback on car2.
I'm sure it is doable, especially the first part. As for the playback, I'm not that familiar with CAN to know exactly how you make the arduino behave like the sensor you are emulating but you can most definitely read data from your SD card and transmit it on the bus.