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I want to know: If I were to add a serial port to a Raspberry Pi and connectan old IBM 3151 dumb terminal to it; will it be as simple as turning it on and using it? Obviously only for command line access.
DavidR
Posted 2017-12-22T02:06:32.483
Reputation: 161
2
more or less: see support page
– Thomas Dickey – 2017-12-22T02:11:46.1334The RPi should already have a "serial" port, but it is at TTL levels. You need a 3.3v TTL to RS-232 converter, e.g. a MAX3232 chip. You will probably have to make your own DB9 to DB25 cable. – sawdust – 2017-12-22T02:46:48.050