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I am able to connect the create 2 robot to my laptop with a serial cable. I am using putty_beta terminal to run. I am not able to key in commands in the terminal. but I am able to receive information from the robot. I want to achieve two way serial connection. What can I do?

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  • $\begingroup$ Why do you think you don't have two-way serial communication? You definitely are receiving information. Try pressing control+G while in PuTTY; this will send character code 7, which should reset the robot. If the robot resets, you have two-way communication. $\endgroup$
    – Steve
    Commented May 25, 2017 at 2:13

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I was not able to send commands just using putty, because putty sends every character individually. You need to write your own code or use something like https://github.com/xa4a/go-roomba to communicate with the roomba

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The Roomba expects binary data. When you type in the PuTTY terminal, you are sending ASCII data. For example when you type "128" into the terminal, you are actually sending 3 bytes of data: [49 50 56]. And because many commands of the OI Spec are outside the typeable ASCII range, using the terminal in this manner won't work.

You should use a programming language such as C, C#, Python, etc. to send the data packet. There are many libraries for the Create2 freely available online.

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