tito-t:
which subset of the following UART clock freqencies
230400, 460800, 500000, 576000, 921600, 1000000, 1152000, 1500000, 2000000, 2500000, 3000000, 3500000 and 4000000will work by Serial.begin(x) with either one of the following cpu boards:
16MHz Nano
16MHz Uno
16MHz Mega2560
Zero (M0, 48 MHz cpu)
Due (M3, 84 MHz cpu)
and esp8266 (80 MHz cpu)
What have you learned from reading the datasheets for the various microprocessors on those boards?
...R