Initial use: AT command testing

The CAN to TTL module is designed with a USB interface, allowing you to directly connect it to your computer for command testing. No additional USB to UART converter is required. It functions as a USB device rather than a UART serial port, so you don't need to worry about the serial port baud rate. You can communicate at any baud rate of your choice (such as 9600 or 115200) with ease.

Connect the CAN to TTL module to your computer's USB port using a TYPE-C data cable. Once connected, open the serial assistant. You will see a USB serial device listed in the serial port options. Select that device and click on "OpenCom" to establish the serial connection, as shown in the diagram.

Now, let's try entering the command h\r to retrieve the help information. Here's how you can do it:

Step 1: Enter "h\r" or simply "h" (if "AddCrLf" is not selected, you need to enter "h\r") in the command area.

Step 2: If you only enter "h," make sure to check "AddCrLf."

Step 3: Click on "SEND" to send the command "h."

Step 4: After sending, the data window will display the received help information, including all the commands and the current CAN baud rate details.