This is the K6BP RigControl software, an Amateur Radio transceiver controller using an ESP-32 Audio Kit card commonly sold on AliExpress for as little as $11.89 with free shipping (Mar 8, 2022).
The software is currently in "Hello World" stage: it can configure its WiFi and start a web server. No ham radio control is implemented yet.
The device provides a WiFi based web interface to a phone, tablet, or computer, and connects to a transceiver via audio line-level input and output, serial transceiver control, and digital control lines for T/R, etc. Some hardware will require voltage level conversion for the serial and digital I/O, and inexpensive devices are recommended in the documentation. There is no USB master. Control of devices via WiFi and Bluetooth is possible.
ESP32 Audio Development Kit sold on AliExpress.com .
The design of this appears to originate with AI-Thinker (site) derived from a design by Espressif called the LyraT (site). The boards available on AliExpress.com are either the AI-Thinker product or follow it closely. The LyraT board has a different pinout.
The board connects to the net via WiFi and provides two audio inputs and two audio outputs. Microphone or line inputs are mutually exclusive. Line or speaker outputs are also mutually exclusive. There is a USB serial interface for debugging, and additional serial and digital outputs sufficient for controlling serial rig control interfaces such as Yaesu's CAT and operating a T/R input or other peripherals. CW and RTTY control is possible but not yet implemented in software.
Download the ESPTouch App from the app store: Android iOS
Install the esp-idf, using the instructions from https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html
On Linux, using bash, run the esp-idf environment script. Assuming that
esp-idf is installed in the parent directory:
source ../esp-idf/export.sh
On Windows, see the installation instructions on how to run a PowerShell or command prompt environment.
Build the project and flash it to the board, then run monitor tool to view serial output:
idf.py -p PORT flash monitor
Run the ESPTouch app to set the WiFi parameters of the board.
Open your web browser to the IP address printed by ESPTouch or the serial monitor, in the form http://address/
If your home router provides dynamic DHCP addresses for devices on your LAN, the device name will be rigcontrol until you set it. So you can try opening http://rigcontrol.lan/ if your router provides a .lan domain. On some browsers, just typing rigcontrol.lan/ will work.