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pygrbl-streamer

Stream G-code to GRBL controllers over serial, with progress callbacks, pause/resume/stop and configurable connections. Files and generators are consumed lazily, so a job of any size streams in constant memory.

Used daily in a professional workshop, driving several machines in production.

from pygrbl_streamer import GrblStreamer

with GrblStreamer("/dev/ttyUSB0") as laser:  # "COM3" on Windows
    laser.progress_callback = lambda percent, command: print(f"{percent}%")
    if not laser.send_file("job.gcode"):
        raise RuntimeError("Job did not complete")

The full documentation is at https://offerrall.github.io/pygrbl-streamer/.

Documentation

  • Overview: supported controllers, tested machines, safety and the compatibility policy.
  • Connections: serial settings, handshakes, homing, retries and receive-buffer size.
  • Streaming: files and generators, progress, flow control, pause, resume and stop.
  • API: methods, callbacks, logging, state and troubleshooting.
  • Limitations: unsupported controllers, machine caveats and recovery boundaries.

Maintaining

  • Releasing: CI, PyPI trusted publishing and the release steps.

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