⚠️ VIBECODED SOFTWARE

EverLink is a vibecoded project, built with the help of Claude (Free). Expect bugs and questionable code, use at your own risk.

EverLink lets you use a controller connected to a PC to send its inputs to a console through an ESP32 USB relay.

The PC reads the controller inputs, sends them to the ESP32, and the ESP32 presents itself to the console as an Xbox 360/XInput controller.

Controller
    │
    ▼
   PC
 EverLink
    │
    │ USB
    ▼
  ESP32
  Relay
    │
    │ USB HID
    ▼
 Console

• 🎮 Supports Xbox, PlayStation, Switch Pro and other controllers recognized by SDL3
• 🔄 Real-time controller input streaming
• 🔌 ESP32 relay outputs a standard Xbox 360/XInput controller over USB
• 🕹️ Button, stick and trigger remapping

• Windows 10/11
• A controller supported by SDL3

The relay requires an ESP32 with native USB / USB OTG support.

Supported families:

• ESP32-S2
• ESP32-S3
• ESP32-P4

Regular ESP32 and ESP32-C3 boards do not have the required native USB functionality for the relay's controller output.

The relay firmware uses the ESP32XInput library.

Once the EverLink host is launched, if the program doesn't auto-detect the relays, press "Rescan" to look for compatible EverLink relays. once found, you may rename the relays by right clicking on them and selecting "Rename". To map a controller to a relay, go into it's configuration menu (configure) and select your controller of choice from the dropdown selector named "controller" (to assist in finding the proper controller in a list, a green indicator will light up whenever a controller is active.) From there, you can either choose to apply remapping settings (which can be set and saved similarly to the Dolphin emulator), or directly start playing ! (note: The host purposefully stops sending controller inputs to the relay when the configuration window is open)

From the Host directory:

dotnet build

Run with:

dotnet run

For a self-contained executable:

dotnet publish -c Release

Open Relay/EverLinkRelay.ino in Arduino IDE and install:

• ESP32 board support by Espressif
• ESP32XInput

Select your ESP32-S2/S3/P4 board and enable its USB OTG / TinyUSB mode before uploading.

See the relay documentation for board-specific flashing instructions.

EverLink is split into two parts:

Host

Reads controller inputs through SDL3, applies any configured remapping, and sends the resulting controller state to the relay.

Relay

Receives the controller data over serial and converts it into USB HID reports so the console sees the ESP32 as an Xbox 360/XInput controller.

The communication between the two is defined by the EverLink serial protocol.

EverLink/
├── Host/                  # Windows application
├── Relay/                 # ESP32 firmware
└── EverLink_Protocol.md   # Host ↔ Relay protocol

This project is experimental and actively developed. It was built primarily through AI-assisted "vibecoding", so the codebase may contain bugs, rough edges, or questionable engineering decisions.

If something breaks, open a bug report and I'll try and look at it when I can.