DA2ETH Controller

A graphical control application for the Papouch DA2ETH dual-channel D/A converter.
Communicates over Spinel TCP protocol via Ethernet.

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Features

• Two independent output channels (OUT1 / OUT2)
  • Slider, direct value entry (physical, RAW, percent)
  • Step control with configurable step size and origin point
  • Smooth sweep (ping-pong loop)
  • Quick presets (0 %, 25 %, 50 %, 75 %, 100 %)
  • Real-time output graph with CSV export
• Both outputs — synchronous control of OUT1 and OUT2 simultaneously
• Program sequencer for each output
  • Commands: SET, WAIT, RAMP, JUMP, REPEAT, TRIGGER
  • TRIGGER — start or stop the other output's program from within a running program
  • Real-time waveform graph during program execution
  • Save / load programs to files
• Multi-language GUI — Czech, English, German, French, Spanish (switchable at runtime)
• Simulation mode — test programs without a connected device
• Auto-reconnect and communication watchdog
• Communication log with optional packet trace

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Supported Output Ranges

Range	Type
0–5 V	Voltage
0–10 V	Voltage
0–20 mA	Current
4–20 mA	Current

The hardware output range is configured in the DA2ETH web interface.
The software range selector must match the hardware setting.

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Requirements

Running from source

• Python 3.10 or newer
• PyQt6
• pyqtgraph

Install dependencies:

pip install PyQt6 pyqtgraph

Run:

python da2eth_controller_V16.py

Running the pre-built executable (Windows)

No installation required. See the Download section below.

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Download (Windows executable)

1. Go to the Releases page
2. Download the latest DA2ETH_Controller_vX.X.zip
3. Extract the ZIP to any folder
4. Run da2eth_controller_V16.exe

⚠️ The translations/ folder must be present in the same directory as the .exe file.
Without it the application will start but display placeholder text instead of labels.

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File Structure

da2eth_controller_V16.exe   ← main executable
translations/
    cs.json                 ← Czech (default)
    en.json                 ← English
    de.json                 ← German
    fr.json                 ← French
    es.json                 ← Spanish

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Connection

1. Connect the DA2ETH device to your network
2. Enter the device IP address (default: 192.168.1.254) and port (10001)
3. Click Connect

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Program Sequencer — Command Reference

Command	Syntax	Description
SET	SET <value> <unit> <range>	Set output to a fixed value
WAIT	WAIT <seconds> s	Wait for the specified time
RAMP	RAMP <from> <u> <to> <u> <step> <u> <ms>ms <range>	Smooth transition from one value to another
JUMP	JUMP <line> <count> x	Jump to a program line N times
REPEAT	REPEAT <count> x	Repeat the entire program N times (0 = infinite)
TRIGGER	TRIGGER <OUT> <START|STOP> <line> <PARALLEL|WAIT>	Start or stop the other output's program

Lines starting with # are treated as comments and ignored.

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Building from Source (Windows)

Install PyInstaller:

pip install pyinstaller

Build:

pyinstaller --onedir --windowed da2eth_controller_V16.py

Copy the translations/ folder into dist/da2eth_controller_V16/.
The distributable package is the entire dist/da2eth_controller_V16/ folder.

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License

This project is licensed under the GNU General Public License v3.0.
See the LICENSE file for details.

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Device

This software is designed for the Papouch DA2ETH D/A converter.
More information: papouch.com

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About making program

Unfortunately, I’m not an experienced programmer—to be honest, I’m a complete novice—but I’m eager to learn, so after coming up with the idea for this program, I decided to use VibeCoding, which is so widespread these days, with the help of Claude AI. It was a thorny and arduous journey, but all the ideas are mine; Claude created the program itself, which we subsequently modified based on my testing and observations.