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pygpsclient

See what your GNSS receiver sees, and configure a u-blox receiver without u-center

What it does

A graphical console for a GPS or GNSS receiver: position, satellites in view and their signal levels, a sky plot, a map, and the raw sentences the receiver sends. For u-blox receivers it also sets what the receiver outputs and how often (the protocols, the message rates, the navigation settings) and can save that to the receiver, and it can take RTK corrections from an NTRIP caster.

Why you would want it

u-blox's own u-center, the usual tool for configuring their receivers, is Windows-only. PyGPSClient does that job on Linux, which matters for a station clock: a receiver sending the sentences gpsd needs at one fix a second, and nothing it does not, is what chrony or D-058's GPS time read. It is also the quickest way to answer "does this receiver have a fix at all" when the clock is not following it.

Before it will work

A receiver on a serial or USB port, and membership of the dialout group to open it (log out and back in after being added). It runs from the desktop menu or as pygpsclient from a new shell.

How it installs

  • python venv: certifi==2026.7.22 --hash=sha256:62f22742b58a1a33014a2b6b706588a8d7e2a88ae7bd1a6ebe8c992928483775 --hash=sha256:741e2c3b351ddf169a738da9f2c048608ff7f2c5cc02f1ebc6b118bb090d5d55, charset-normalizer==3.5.2 --hash=sha256:01077390b03f7988f11d700a2194e69b119741a86b1a638b1db88891e3eced8e --hash=sha256:01b0c0d2262a9e28e8484a278c7e1b5d650e3ac8cf2683d2967e25899f208bdf --hash=sha256:04851f73ae72b8413dddadb16a49dfee95263553741fd42d546f7d66907e6be5 --hash=sha256:0521c5665880b33d603717defa76c094048900010897909952397feb3039da56 --hash=sha256:0774bf9bf620249fee3e0b8b9fd3065de213be30f3aa94ce2494b3b638949e26 --hash=sha256:0891b9d3903c5571c03771ca669a4b0ec5618ca722a5c957d3d29cd4e5062848 --hash=sha256:0c951d5e6dd9c2ff60609476752bee49da4206adde960ebc247766937f72e718 --hash=sha256:0fed1d06615f022ee3b13caf5e8b180cfea32bb2c5aded8a9d44277afc040f93 --hash=sha256:114e4d0c92d618409ed82a99e22b5c5e768fe995f2973f78265f4524f49d4640 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--hash=sha256:48539d96169eadab60ad2752b7912cde3996d480ffb298ba556652c3500d18d9 --hash=sha256:fd17ce3ceb61537f471a16e6aee97c7d96e0b90ba6649ac1587094d4cd096603, pygpsclient==1.7.7 --hash=sha256:5b49b30a14b551f4eb62e37acdae0b1a24a23f8f16cb0748faff6ee828bafc01 --hash=sha256:794f1932712443a3301b32dc480e996fac1e08548e7ce75ac24bd2872a4a2e5a, pynmeagps==1.1.7 --hash=sha256:632bd75b05def5ad2d5ed02ad239ce7cfd11a115dc51f95e35461072bf557d3d --hash=sha256:e2ba7e03c197d9888e1093ea8a2eeb60edce5e6c72a121d540b13197ca1944ae, pyqgc==1.0.0 --hash=sha256:6a13d7ebd794984c9dad7a5d0b84c400c9bc6a61fc1a7dd2a92657166ab857de --hash=sha256:d26d0cabc99cb64ecca1e1ac184c62f23a2edb352b8693606d0b11087c671af8, pyrtcm==1.2.0 --hash=sha256:3880a900292aeed6e3d053a68c20c6f183cabe0bd9ad65e74c2a08f4848cc5cc --hash=sha256:a76514d4c3189b9a1b3c77fed8bad73f69e76f1797b3536fdf42b8dee6bff7d1, pysbf2==1.0.5 --hash=sha256:35c768ba5077dcef2911e3588b922c708a3420b41cfedcfec8f865ab34bee76f 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--hash=sha256:2a0d60c172f83ac6ab31e4554906c0f3b3588d37b5cb939b1c061f4907e278e0 --hash=sha256:f288924cae4e29463698d6d60bc6a4da69c89185ad1e0bcc4104f584e960b9ed, urllib3==2.8.0 --hash=sha256:0cf3cae568d36aa9576b28dfb35f11328f1cb974ca7647d9475ebb86c75ac6e3 --hash=sha256:63bf2ead4c879426ebf22ef2a781eeb4aa3b4ae798a0435506f8687fd5bb9b63
  • Resolved on 2026-09-30 with uv pip compile --universal --generate-hashes --python-version 3.11 from pygpsclient==1.7.7. Measured the same day in containers, pip --require-hashes into a fresh venv with python3-tk from the archive: the whole set installed, import pygpsclient, pygpsclient.app succeeded and pygpsclient -h printed its usage on Debian 13 (Python 3.13.5), Ubuntu 24.04 (3.12.3) and Kali (3.14.7). Then through this engine in a debian:13 container (hammunition install pygpsclient, exit 0: python3-tk and python3-venv from apt, the venv, the wrapper and the desktop entry), and the wrapper run under xvfb-run was still running at a 20 s timeout with an empty stderr. Nothing was tried against a receiver. Regenerate the pins with the same command when bumping the version.

Known problems

A serial port has one owner. While gpsd holds the receiver, PyGPSClient cannot open the same port; stop gpsd first (sudo systemctl stop gpsd.socket gpsd) and start it again afterwards, or GPS time and every gpsd client lose the receiver while you work. Configuration saved to a u-blox receiver persists: note what you changed. A Tk application, so it looks plainer than a Qt one; that is expected.

Keeping it current

  • probe: pypi
  • strategy: reinstall
  • Releases every week or two in 2026 (1.7.4 on 09-03, 1.7.5 on 09-07, 1.7.6 on 09-17, 1.7.7 on 09-30). A bump regenerates the whole pinned set; see the install note.

Where to get help with the software itself

GitHub issues and discussions on semuconsulting/PyGPSClient (Steve Smith, semuadmin); the project also keeps a user guide in its README.

Source: catalog/packages/pygpsclient.yaml