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This project explores embedded RF development using Arduino on ESP32 LoRa hardware, implementing a CW Fox Hunt Beacon and a separate project for a dedicated receiver. The beacon transmits a user configurable, identification string, in Morse code at 12 WPM, followed by a 10-second carrier and 20-second pause cycle. It operates at ~10 mW, offering several hours of runtime on an 800 mAh battery. The firmware allows full parameterisation in code, including operating frequency, CW speed, transmit message, carrier duration, pause interval, and RF output power adjustable from -9 dBm to +21 dBm (0.12 mW–125 mW). A programmable button enables TX disable and deep sleep mode.
The receiver project is published on its own project page:
https://lora-ham-fox-hunt-receive-70cm.sourceforge.io
CODE FOR THIS PROJECT HAS NOW BEEN RELEASED.
Download the Arduino Sketch from the Files section.
Features
- Frequency user programable in code
- CW speed is user adjustable in code
- TX Message, Carrier duration and pauses are adjustable in code
- TX power is adjustable from -9dBm to 21dBm (0.12mW to 125mW) in code
- PRG button programmed to disable TX and put the unit to sleep
Project Samples
