brltty
Braille display daemon for console access
TLDR
Start brltty daemon
SYNOPSIS
brltty [options]
DESCRIPTION
brltty is a background daemon that provides access to the Linux/Unix console for blind users via refreshable braille displays. It drives the braille display and provides complete screen review functionality with some speech capability.
The daemon supports connections via serial port, USB, or Bluetooth and works with dozens of braille display models.
PARAMETERS
-b driver
Braille display driver code-d device
Device specification (usb:, bluetooth:, serial port)-t table
Text translation table-c table
Contraction table-e
Enable speech support-s driver
Speech synthesizer driver-n
Run in foreground (no daemonize)-f file
Configuration file path-v level
Verbosity level (0-9)-l level
Log level-V
Print version information-h
Display help summary
CONFIGURATION
Default configuration file is /etc/brltty.conf. Text tables are stored in /etc/brltty/Text/. The device specification format is qualifier:data with defaults of usb:,bluetooth:.
CAVEATS
Must be run as root or with appropriate permissions for device access. The braille display must be connected and powered on before starting. Supports 70+ braille display models from various manufacturers.