for longer distance wire transfer
moze i bez otpornika. on u nekim slučajevima treba (za terminiranje linije u slučaju zadnjeg uređaja u lancu), ali kod nas je radilo i bez njega.
desna strana čipa je ista (napajanje i kabel). ja možeš dodati neki 100nF kond između Vcc i GND čist da malo isfiltrira napajanje.
s lijeve strane spojim zajedno RE' i DE (ovim se bira da li se signal šalje ili prima, ne može istovremeno oboje). za slanje signala, serijski TX dovedem na DI, a ova dva spojena pina spojim na +5V (receive disable, transmit enable). na drugoj strani, za primanje RO na čipu spojim na serijski RX, a ova dva pina zajedno na GND (receive enable, transmit disable).
"LowLatencyLogger" is intended to be easy to modify while providing data logging at up to 500 Hz on AVR boards without using multi-threading or interrupts.
"AnalogBinLogger" demonstrates faster logging, up to 40,000 Hz for a single pin. AnalogBinLogger uses interrupts and a timer so it is more difficult to modify for another sensor.
advanced, interrupts...
https://learn.adafruit.com/multi-tasking-the-arduino-part-2?view=all
interrupts, eeprom, watch dog, sleep
updates, and then uses internal controller time