High voltage source (0 - 4 kV, 10 W) integrated with Raspberry Pi 4B for automation of measurements and remote control. Developed for a DARPA project HR001118C0125 on the quantised inertia (QI). The program is interactive with a GUI (run from UI.py) developed by Yujie Zhao (https://yujiephysics.wordpress.com/, https://github.com/Yujie-Zhao) . It was created and tested in PyCharm IDE. Electronic circuit can be provided by request.