SmartFOX 2M – ARDF Beacon Fox (144 MHz)

SmartFOX 2M is a compact, battery powerd, self-contained ARDF (Amateur Radio Direction Finding) fox transmitter for the 2-meter band (144 MHz).
When ordered, your SmartFOX comes with the latest firmware pre-installed.

Buy here SmartFOX 2M – ARDF Beacon Transmitter (144 MHz)

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🧠 How it Works

When powered on, the SmartFOX executes a predefined sequence of audio, tones, and cw/morse messages, and actions — all configurable via a simple YAML file.

When plugged into your computer via USB-C, the device shows up as a USB mass storage drive labeled SMARTFOX.
Edit the config.yaml file using Notepad or any other text editor.

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🔋 Power and Status Indicators

• Battery-powered with USB-C charging support
• Blue LED – status indicator (also blinks CW if sending CW messages)
• Red LED – charging indicator (lit while charging, off when full)

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🛠 Configuration – config.yaml

Here's a breakdown of the editable parameters:

# Frequency in MHz
fmFreq: "145.450"

# Frequency offset in Hz
fmOffset: "30000"

# CW (Morse code) speed in WPM
cwSpeed: "75"

# CW tone frequency in Hz
cwFreq: "750"

# Morse message to transmit
cwMessage: "VVV de ON6URE LOCATOR IS JO20cw PWR IS 32mW ANT IS A NAGOYA MINI VERTICAL"

# Sequence of actions (one per line, can include delays and function triggers)
payload: |
  signal
  wait 5
  pwm
  wait 1
  ring
  wait 1
  busy
  wait 1
  congestion
  wait 1
  nokia
  wait 1
  pacman
  wait 1
  doom
  wait 1
  supermario
  wait 1
  babyelephantwalk
  wait 1
  cw0
  wait 2
  cw1
  wait 1
  cwmsg
  nosignal
  wait 20

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🔁 Firmware Update

To update the firmware:

1. Open config.yaml
2. Replace its contents with:

   firmwareupdate
   

3. Save the file
4. Eject or safely remove the SMARTFOX drive
5. The device will reboot into UF2 bootloader mode and appear as a drive named RPI-RP2
6. Drag the new smartfox2m.uf2 file into the RPI-RP2 drive
7. The firmware will update and reboot automatically
   ✅ Your configuration (config.yaml) will remain untouched

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🔄 Restoring Default Configuration

If you delete the config.yaml file and eject the SMARTFOX drive, the device will automatically regenerate a default config file the next time it boots up.

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📦 Features Summary

• Battery-powered with USB-C charging
• Status and charging LEDs
• Easy configuration via USB (config.yaml)
• Transmits CW (Morse) and classic ringtones
• Fully customizable action sequence
• Simple drag-and-drop firmware updates

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📃 License

This project is licensed under the MIT License.

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🧃 Credits

Developed by ON6URE – RF.Guru
Firmware, schematics, and documentation licensed under MIT.