joulescope
Joulescope™ host driver and utilities
Decision gist · record as of 2026-08-14
Yes, if you own a Joulescope device and need programmatic control or automation. The package is actively maintained, permissively licensed, and supports modern Python versions. Install friction is moderate due to multiple dependencies and hardware requirements, but the API is straightforward. Not useful without the physical hardware.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires a Joulescope hardware device connected via USB and pyjoulescope_driver to be installed.
- Medium install friction due to 7 runtime dependencies including pyjoulescope_driver and platform-specific wheels for Windows, macOS, and Linux.
- Actively maintained with a recent release (10 days old) and current Python support (3.12–3.14).
License · maintenance · safety
Apache-2.0 (permissive) — Apache-2.0 is permissive; you can use this package in commercial and proprietary projects without reciprocal licensing obligations.
last release 2026-08-04 (10 days) · last repo commit 2026-08-04 · 50 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 116,527 downloads/mo, #12,199 on PyPI
Alternatives
Verify before relying
import joulescope
import numpy as np
with joulescope.scan_require_one(config='auto') as js:
data = js.read(contiguous_duration=0.1)
current, voltage = np.mean(data, axis=0, dtype=np.float64)
print(f'{current} A, {voltage} V')- Whether pyjoulescope_driver is freely available or requires proprietary hardware licensing.
- Specific USB device requirements (e.g., Joulescope model compatibility).
- Whether the CLI tool 'joulescope' is fully functional without the graphical UI.
What it is and what it does
Joulescope is the Python driver for Joulescope, a hardware DC energy analyzer. It lets you automate measurements of current, voltage, power, and energy directly from Python code, capturing real-time data from the connected device. The package provides both a programmatic API for integration into test and monitoring scripts and a command-line tool for direct operation.
The driver depends on pyjoulescope_driver for low-level hardware communication, numpy for data processing, and several utility libraries (psutil, pyjls, python-dateutil, pymonocypher, pywin32). It supports Python 3.12–3.14 on Windows, macOS, and Linux, with prebuilt wheels for common architectures. Most end-users run the graphical interface from pyjoulescope_ui instead, but this package is the foundation for programmatic control and automation.
Use it for
- Automate power consumption profiling in embedded systems development and optimization workflows.
- Capture and log energy data for battery-powered device testing and validation.
- Integrate real-time current and voltage measurements into continuous integration or hardware test suites.
- Build custom power analysis dashboards or data pipelines using the Python API.
- Monitor power draw during firmware development and debugging cycles.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you own a Joulescope device and need programmatic control or automation.
The package is actively maintained, permissively licensed, and supports modern Python versions. Install friction is moderate due to multiple dependencies and hardware requirements, but the API is straightforward. Not useful without the physical hardware.
Install
joulescope on PyPI
Before you install
Medium install friction due to 7 runtime dependencies including pyjoulescope_driver and platform-specific wheels for Windows, macOS, and Linux. Actively maintained with a recent release (10 days old) and current Python support (3.12–3.14).
Requires a Joulescope hardware device connected via USB and pyjoulescope_driver to be installed.
License in practice
Apache-2.0 is permissive; you can use this package in commercial and proprietary projects without reciprocal licensing obligations.
Quickstart
import joulescope
import numpy as np
with joulescope.scan_require_one(config='auto') as js:
data = js.read(contiguous_duration=0.1)
current, voltage = np.mean(data, axis=0, dtype=np.float64)
print(f'{current} A, {voltage} V')Verify before relying
- Whether pyjoulescope_driver is freely available or requires proprietary hardware licensing.
- Specific USB device requirements (e.g., Joulescope model compatibility).
- Whether the CLI tool 'joulescope' is fully functional without the graphical UI.
Package facts
| License | Apache-2.0 permissive |
| Python support | Supports the current Python release ~=3.12 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | 7 packagesnumpypsutilpyjlspyjoulescope_driverpython-dateutilpymonocypherpywin32 |
| Maintenance | Actively maintained 10 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 116,527 / month, #12,199 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersIntended Audience :: End Users/DesktopIntended Audience :: Science/ResearchLicense :: OSI Approved :: Apache Software LicenseOperating System :: MacOSOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: Windows :: Windows 10Operating System :: Microsoft :: Windows :: Windows 11Operating System :: POSIX :: LinuxProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: Implementation :: CPythonTopic :: Scientific/EngineeringTopic :: Software Development :: Embedded SystemsTopic :: Software Development :: TestingTopic :: System :: Hardware :: Hardware DriversTopic :: System :: Hardware :: Universal Serial Bus (USB)Topic :: Utilities |
Evidence: joulescope-1.6.0-cp312-cp312-macosx_10_13_universal2.whl; joulescope-1.6.0-cp312-cp312-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; joulescope-1.6.0-cp312-cp312-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; joulescope-1.6.0-cp312-cp312-win_amd64.whl; joulescope-1.6.0-cp312-cp312-win_arm64.whl; joulescope-1.6.0-cp313-cp313-macosx_10_13_universal2.whl; joulescope-1.6.0-cp313-cp313-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; joulescope-1.6.0-cp313-cp313-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; joulescope-1.6.0-cp313-cp313-win_amd64.whl; joulescope-1.6.0-cp313-cp313-win_arm64.whl; joulescope-1.6.0-cp314-cp314-macosx_10_15_universal2.whl; joulescope-1.6.0-cp314-cp314-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; joulescope-1.6.0-cp314-cp314-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; joulescope-1.6.0-cp314-cp314-win_amd64.whl; joulescope-1.6.0-cp314-cp314-win_arm64.whl
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