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It can be done, if you don’t mind (at least) tenfold bit rate reduction. If you set the uart to 8,N,1, than you know that long strings of back-to-back characters will have a 10 between the ...
You’re problem is not that the chips have 1 UART. The problem is that you stick with only what you know. First problem is the Arduino is obviously expensive. 30$… ...
The new Arduino hardware offers a small and straightforward USB to UART converter with digital isolator, working between 2.5V and 5V up to 3Mboud, complete with an Arduino Pro mini connector.
Prestissimo Uno+ Arduino dev board with extra I2C UART SPI ADC IO and PWM channels. 2:24 pm November 5, 2018 By Julian Horsey.
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