Echo help

Browser serial terminal for Chrome / Edge. Click the screen to type.

• Connect — pick baud rate, then Connect and choose your USB serial device.
• Enter — line ending sent with Return (CR / LF / CRLF).
• Local echo — show what you type locally (useful if the device does not echo).
• Border — CRT bezel frame on or off.
• Glitch — scanlines, flicker, jitter, and sweep intensity.
• Clear — wipe the screen buffer.
• Esc — hide or show the top menu (immersive view).
• Scroll up to pause auto-follow; scroll back to the bottom to resume.
• Arrow keys and common Ctrl+letter sequences are sent to the device.