Hello There... First, please watch my code.. #include <Wire.h> extern "C" { #include "utility/twi.h" // from Wire library, so we can do bus scanning } #define TCAADDR 0x70 #define hellee 0x71 void tcaselect(uint8_t i) { if (i > 7) return; Wire.beginTransmission(TCAADDR); Wire.write(1…

Trouble in tca9548a at sketch serial

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