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Joulescope graphical user interface
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Latest commit 57c8891 Jun 20, 2019

Joulescope UI

Welcome to Joulescope™! Joulescope is an affordable, precision DC energy analyzer that enables you to build better products. Joulescope™ accurately and simultaneously measures the voltage and current supplied to your target device, and it then computes power and energy. For more information on Joulescope, see

This repository contains the Joulescope graphical user interface (UI). The UI runs on a host computer and communicates with the Joulescope device over USB. The application source code is available at

For the list of changes by release, see the Changelog.

The Joulescope UI is under active development, and many features remain outstanding. See the future features document for details.

Quick start

Most Joulescope users will want to download the application. The packages are available at pypi, but this project uses a forked version of pyqtgraph which you will need to install manually.


Start by following getting the Joulescope package running using the instructions located in the joulescope README.

Install python3 dependencies

pip3 install -r requirements.txt

As of May 2019, this package depends upon a forked version of pyqtgraph which is automatically installed from the Joulescope website.

If you are just interested in developing the UI, you can install the joulescope package as described in the joulescope README. However, if you want to develop both, you can modify your pythonpath.

On Windows:

set PYTHONPATH=C:\path\to\pyjoulescope;C:\path\to\pyjoulescope_ui;


Install QT5 tools

sudo apt install qtcreator qt5-default qt5-doc qt5-doc-html qtbase5-doc-html qtbase5-examples


All pyjoulescope_ui code is released under the permissive Apache 2.0 license. See the License File for details.

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