Uses esp32 S2 or S3 for the USB interface and receives stick position info over esp-now from a suitable transmitter (no such transmitter is currently available, so you may want to hang on a bit before grabbing this). I'll put up an example transmitter project eventually.
Tested with S2 USB dongle, Lolin ESP32 S2 Mini and ESP32-S3-DevKitC-1. There aren't a lot of requirements for the hardware other than needing to be an S2 or S3 processor with the usb directly connected to the chip, not via a usb-serial adapter, and having an antenna for wifi.
Code based on platform-espressif32/examples/espidf-peripherals-usb and then extended to add esp-now receiver code, add a custom Joystick descriptor with higher resolution and a composite descriptor for S2 to allow both usb hid and cdc serial output.
Much cleanup work still to do.
https://www.aliexpress.com/item/1005006206868342.html
https://www.aliexpress.com/item/1005006157693055.html
https://www.aliexpress.com/item/1005006002965361.html
