Ecowitt2APRS

Ecowitt2APRS is a lightweight Linux service that connects weather data from Ecowitt compatible weather stations to the APRS-IS network, transmitting the data in the form of APRS weather packets. It is written in C and is designed to run on minimal Linux systems, such as low-power SBCs.

Features

• Receives Ecowitt weather data via HTTP POST.
• Converts and forwards data to APRS-IS as standard APRS weather packets.
• Runs as a background systemd service.
• Lightweight and efficient — suitable for embedded systems and SBCs like Raspberry Pi.

Requirements

• GCC (or compatible C compiler)
• Linux system with systemd
• Internet connection (to forward packets to APRS-IS)
• Compatible Ecowitt weather station or gateway (e.g., GW2000C, WH2650)

Weather data should be responsibly reported. Make sure your station is properly calibrated and positioned before forwarding to APRS-IS.

Build

Clone the repository and build the binary:

make

This will produce:

• A binary: bin/ec-aprs-wx
• A sample configuration file: bin/config.cfg

Install

To install the binary, configuration file, and systemd service:

sudo make install

This will:

• Copy the binary to /usr/local/bin/ec-aprs-wx
• Copy the configuration file to /etc/ec-aprs-wx.cfg
• Install and enable a systemd service at /etc/systemd/system/ec-aprs-wx.service

Configuration

Edit /etc/ec-aprs-wx.cfg to set:

• APRS_CALLSIGN_SSID: APRS callsign (e.g., 4S6DRJ).
• APRS_PASSCODE: APRS-IS passcode. To generate the passcode, use this service.
• APRS_LATITUDE: Latitude in APRS format (e.g., 4903.50N).
• APRS_LONGITUDE: Longitude in APRS format (e.g., 07201.75W).

Starting the service

sudo systemctl start ec-aprs-wx

Enable service on boot

sudo systemctl enable ec-aprs-wx

Configuration for the Ecowitt Hub

To send data to Ecowitt2APRS, follow these configuration steps on the Ecowitt hub:

• Enable the customized weather service.
• Set the protocol type to Ecowitt.
• For the Server IP, specify the IP address of the PC or SBC hosting the Ecowitt2APRS service.
• Set the Path to: \.
• Use Port: 1234.
• Set the upload interval to 60 seconds, or another preferred value supported by your Ecowitt hub.

Make sure to save your changes after updating the settings.

Clean

To remove all build artifacts:

make clean

License

This project is licensed under the GNU GPL Version 3. See LICENSE for details.