You could use hardware serial at 110 baud if you drop down to a 4MHz clock.
With respect to bit banging, generating output is trivial, receiving is more problematic but unquestionably doable at those speeds.
You could use hardware serial at 110 baud if you drop down to a 4MHz clock.
With respect to bit banging, generating output is trivial, receiving is more problematic but unquestionably doable at those speeds.