I recently purchased an iRobot Create 2. To connect to it, I am using RealTerm Although I can send opcode commands that do not require a Data Byte (128, 173, 133, etc), I cannot figure out the format for opcodes with data bytes

For example, I want to turn on the power LED to full brightness. I have tried the following formats, but to no avail:


139 4 0 254



Any direction is appreciated.

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1 Answer 1


Found the answer to my own question. The iRobot needs to be in Safe or Full mode in order to control the LEDs. So, I was entering the numbers correctly (139 4 0 254), but needed to send the command for Safe (131) or Full (132) first.


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