Send CW with the input you have.

You do not need a dedicated key to begin. Use a keyboard, mouse, or touchscreen immediately, or connect one of the documented hardware paths when your browser supports it.

Start without hardware Open Quick Start

Input methods

The status shown below checks browser API availability only. A browser that can request device permission does not guarantee that an unlisted device or protocol is compatible.

Keyboard

Use Left Arrow for dit and Right Arrow for dah.

Supported in this browser
Hardware
No hardware required
Input
Paddle-style dit and dah elements
Timing
Generated locally using the shared character and Farnsworth settings
Technical detail
Software elements are decoded locally by the Unified TX keyboard provider.
Open Unified TX Practice

Mouse or touchscreen

Tap or click the on-screen dit and dah controls.

Supported in this browser
Hardware
No hardware required
Input
Paddle-style dit and dah elements
Timing
Generated locally using the shared character and Farnsworth settings
Technical detail
Pointer Events feed the same software provider, scoring, and persistence path as keyboard input.
Open on-screen paddles

Morserino-32

Connect a supported Morserino and practise with its decoded serial output.

Checking browser support
Hardware
Morserino-32 using the site-supported output workflow
Input
Decoded text
Timing
Read from decoded device output; the browser does not reconstruct raw key timing
Technical detail
Uses Web Serial at 115200 baud and the existing Morserino preparation flow; this is not generic COM support.
Open Morserino practice

WinKeyer

Connect a supported WinKeyer for paddle-echo practice.

Checking browser support
Hardware
WinKeyer-compatible hardware using the supported host protocol
Input
Decoded paddle echo and status frames
Timing
Generated by WinKeyer; decoded echo enters the shared scoring path
Technical detail
Uses Web Serial and the WinKeyer host protocol, including explicit mode and speed setup; this is not generic COM support.
Open WinKeyer practice

VBand

Connect a compatible VBand HID device.

Checking browser support
Hardware
Compatible VBand HID device
Input
Decoded VBand text
Timing
Read through the VBand adapter; decoded text enters the shared scoring path
Technical detail
Uses WebHID and the existing VBand adapter; browser API availability does not confirm a specific device.
Open VBand practice

Why there is no “generic COM port” option

A COM port is only a byte transport. CW hardware may send decoded text, raw key-down/key-up timestamps, WinKeyer frames, Morserino output, modem-control state, or a vendor-specific format. Those formats are not interchangeable.

Morse Trainer Pro currently supports documented Morserino and WinKeyer workflows. It does not guess baud rates, interpret arbitrary serial data, poll modem-control lines, or claim that every USB-to-serial adapter is a CW key.

To evaluate another serial device safely, provide its model, firmware version, documented protocol, baud rate, example receive-only frames, and whether timing is generated by the device or must be reconstructed from key events. The site will not send radio-control or transmit commands through a generic terminal.

Browser and permission notes

Software controls work in current graphical browsers. Serial and HID access require HTTPS, an explicit user action, and permission for the selected device. If a Connect button is unavailable, use the keyboard or on-screen controls and check this page again in a browser that exposes the required device API.

Firefox 151 and later expose Web Serial on desktop, while WebHID remains less widely available. Safari and iOS users should use software input unless the browser itself reports the relevant capability on this page.