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Asked: 2026-05-10T17:05:44+00:00

I need to do some communications over a serial port in Ruby. From my

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I need to do some communications over a serial port in Ruby. From my research, it appears that there aren’t many modern libraries for serial communications and the newest material I can find is from 2006. Are there any gems that I’m not aware of?

I ultimately need to maintain communications with a serial device attached to USB (I can figure out the port no problem) for back and forth communications like so (somewhat Ruby-esque pseudo code).

def serial_write_read   if serial.read == 'READY'     serial.write '1'     until serial.read == 'OK'       serial.write '5'     end     return when serial.read == 'DONE'   end end
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  1. The serial port specification has not changed in forever, I wouldn’t worry about how old the libraries are.

    I’m assuming you saw this article from 2006 about ruby and serial ports

    Here’s someone who got the Ruby-SerialPort library mentioned there to work on macs this year.

    There’s also this old post from ruby talk, about interfacing to the Win32 Serial API.

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