Search Results for "esp32"

This project is intended to be coupled with my other LoRa board based project, 70cm Ham Radio Fox Hunt Beacon, which can be found at the link below: https://lora-ham-fox-hunt-beacon-70cm.sourceforge.io The receiver, also ESP32 LoRa-based, is designed for simplicity and accessibility, requiring minimal user setup. It features an OLED display providing real-time frequency readout and received signal strength indication (RSSI), presented numerically in dBm, as an S-meter value, and via a graphical bar. The system supports direction-finding applications, with provision for a compact 4-element Yagi antenna to enhance signal localisation. ...

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). ...

...Op Note 2: You will need determine pinouts to the MFJ-993b DB9 yourself. This is easy to determine; refer to the manual at https://mfjenterprises.com/products/mfj-993b#product-manuals *Note for ESP32* See https://github.com/dl9sec/MFJ-993WWRC for working with ESP32 modules. It works very well with the MFJ-993B and is a great project! Opto-Isolators are recommended rather than FETs ! Enhancements to this may appear that include additional functionality that this project incorporates.