CAN Bus Simulator

Translated on 22-07-2026, 14:58.

Hello everyone,
I could use a little help.
I want to write a type of simulator panel in C#.

What should this panel be able to do?
- Select ID.
- Edit message.

and send all of this as a combination over the serial interface, so that a CAN interface can record the data. It's essentially a very simple simulator.

Sure, here's the translation of the text from German to English:

"It's kind of like the video you showed me. But not too complicated."
https://www.youtube.com/watch?v=c6LqRw0NHtQ

Does anyone have an idea about the easiest way to implement this?

Best regards.
mobbi

Translated on 22-07-2026, 15:00.

Sorry, maybe I don't understand what the problem is.

I proceeded as follows:
I choose USB HID communication.
Think about the protocol for sending data from the PC to the interface.
Write a PC application to package my data and send it to an interface.
The interface will parse the data, prepare a CAN message, and then transmit it.

Basically, the interface only parses and sends data. The PC application handles everything else.

Now I can fill in the message fields, press a button, and a CAN message will be sent. Additionally, I can integrate this functionality into a thread or timer function to send CAN messages periodically.

Translated on 22-07-2026, 15:01.

I believe his goal is to build a simulator on his own. He wants to select an ID, which will modify the message, and then send it out via RS232 (for example).

Translated on 22-07-2026, 15:02.

Furis wrote:

I think the point is that he wants to create a simulator on his own. Selecting an ID changes the message, and then it's sent via RS232 (for example), out.

I wrote the same thing.
PC application > prepare data > send data to interface > interface parses data package > send CAN message.

Translated on 22-07-2026, 15:03.

KCANMonitor can already do what the person who started the thread is asking for.

See the "Send and Replay" view in the video starting at 1:42.
http://www.canhack.de/en/viewtopic.php?t=2023

If it makes things easier, you can certainly write your own interface using C# and utilize the API.
http://www.canhack.de/en/viewtopic.php?t=137

Best regards, Rainer.