Electronics Testbench Control

SCPI-based drivers and helper scripts for common lab instruments (e.g., Rigol DM3058E DMM, Siglent SPD1305X/3303X PSUs). Uses PyVISA with the pure-Python backend by default.

Quick start

1. System prep (USB access, libusb, udev rules)

   ./install/setup_system.sh
   # replug instruments after this

2. Python env and package install

   python3 -m venv .venv
   source .venv/bin/activate
   pip install -e .

3. Verify discovery

   python3 examples/list_devices.py --idn
   # should print INSTR entries for connected devices

4. Try a command

   • Measure current with the DMM (defaults to Keithley 2110 adapter; swap imports in the script if needed):

     python3 examples/measure_current.py --num-samples 5

   • Nudge the Siglent SPD1305X supply:

     python3 examples/spd1305-module-test.py

Notes

• The install/99-visa.rules udev rule plus plugdev group membership are required for non-root USB access; install/setup_system.sh applies them.
• If NI-VISA is installed, PyVISA will use it; otherwise pyvisa-py handles USB/LAN via libusb.
• Device drivers live under src/testbench/**; add new instruments by subclassing the domain interfaces in src/testbench/domains/.
• These instructions are tested on Ubuntu 22.04.