A cross-platform programmable power supply control software built with Rust and Slint.
Communicating via SCPI (Standard Commands for Programmable Instruments) over Serial Port (USB/RS-232), it provides a lightweight, high-performance, and modern interface for hardware engineers to control laboratory power supplies.
- Modern Dark Mode: High-contrast dark theme designed for engineering environments.
- Real-time Trend Chart: Visualizes Voltage and Current stability over time with auto-scaling lines.
-
Integrated Power Meter: Calculates and displays real-time Wattage (
$P = V \times I$ ) alongside V/I readings. - Tabbed Interface: Organized layout separating Manual Control and Auto Loop functions.
- Bi-directional Sync: Automatically reads the device's current state (Output ON/OFF), Voltage set point, and Current limit immediately upon connection.
- Smart Output Toggle: Unified, large OUTPUT button that clearly indicates state (Blue for ON / Gray for OFF).
- Precise CC/CV Detection: Logic-based detection that compares real-time readings against the active limit (not just the input box) to accurately display Constant Current (CC) or Constant Voltage (CV) modes.
- Scroll Control: Adjust Voltage (
±0.1V) and Current (±0.01A) effortlessly by hovering and scrolling the mouse wheel. - Safe Polling Engine:
- Adjustable Auto-Poll interval (default 1s).
- Anti-Congestion Protection: Automatically limits the minimum interval to 200ms to prevent RS-232 buffer overflows and ensure smooth chart rendering.
- Waveform Loop: Built-in square wave generator that toggles between Voltage A and Voltage B at a specified millisecond interval.
- Language: Rust
- GUI Framework: Slint (Lightweight, suitable for embedded and desktop applications)
- Serial Communication:
serialportcrate - Error Handling:
anyhow
Ensure you have the Rust Toolchain installed.
- Clone the repository:
git clone [https://github.com/yingchaotw/psu-controller-rs.git](https://github.com/yingchaotw/psu-controller-rs.git)
cd psu-controller-rs- Run the application:
cargo run --releaseNote for Linux/macOS users: If you encounter "Permission Denied", add your user to the
dialoutgroup or usesudo.
- Connect Hardware: Plug in your SCPI-supported PSU via USB/Serial.
- Select Port:
- Check the status light (Red = Disconnected, Green = Connected).
- Choose the COM Port and click Connect.
- The software will automatically sync the current settings and Output state from the device.
- Manual Control (Tab 1):
- Adjust Values: Scroll over cards or type values and click Apply.
- Monitor: Watch the Trend Chart and Power Meter (W) for real-time load changes.
- Output: Click the large OUTPUT button to toggle power.
- Adjust Refresh Rate:
- Enter a value in the Interval box (e.g.,
200ms) to change the chart speed. - Note: Inputs below 200ms will be auto-corrected to protect communication stability.
- Enter a value in the Interval box (e.g.,
- Auto Loop (Tab 2):
- Set Level A, Level B, and Interval.
- Click START LOOP to begin automated voltage testing.
- System Settings: Click ⚙ Sys to access Beeper control or Factory Reset.
Supports most Programmable DC Power Supplies following the SCPI standard (IEEE 488.2), including:
- Keysight / Agilent (E36xx series)
- Rigol (DP800 series)
- Siglent (SPD series)
- GW Instek
- Keithley
psu-controller-rs/
├── Cargo.toml # Project metadata and dependencies
├── build.rs # Build script for compiling Slint files
├── src/
│ ├── main.rs # Entry point: UI binding, Timer logic, Chart buffer management
│ └── scpi.rs # SCPI driver: Command definitions (GET_SET_VOLT, OUTP?, etc.)
└── ui/
├── theme.slint # Global color palette
├── appwindow.slint # Main UI layout (Tabs, Header, Chart container)
└── components/
├── card.slint # Basic UI Card wrapper
├── value_control.slint # Voltage/Current control widget
├── chart.slint # SVG path rendering for Trend Chart
└── settings_overlay.slint # Popup settings menu
This project is licensed under the MIT License - see the LICENSE file for details.