[BRLTTY] Can't Get PowerBraille 80 to Connect

[Rob]

wmichaelb at fuse.net wrote:
> I installed Debian Linux 9.4 on a Dell Pentium 4 for a blind friend, and then brltty 
> first using gcc to configure, make, and install, and then when that didn't work, 
> uninstalling it and using Debian's apt-get tool to install the package from their 
> repositories. The serial PowerBraille 80 would not respond to either. Typing 
> brltty as root gives me the version number of the software, but the system does 
> not find brltty-test. 

You need to specify braille-device and braille-driver for serial displays.
So you would want to do something like
brltty -b <drivercode> -d /dev/ttyS0
or
brltty -b <drivercode> -d /dev/ttyUSB0
for serial to  USB converters.