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Esplora is based on a MCU with native USB. The native USB reports connected only when it really connects. You have in setup() a while loop until the USB Serial is valid. The skech waits there for connection. Comment out the while (Serial) loop. The TX and RX LEDs of Esplora are connected to the native USB port Serial interface. They will not light for the ...


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It will not work. USB communication is master/slave. There must be a 'host' and a 'device'. Uno and Esplora are two 'devices'. Connect the boards over TTL Serial. Wire Rx and TX pins together, TX to RX and RX to TX. And ground of course. Serial on Esplora is the USB interface. In 'core' I see the Esplora has a second serial interface called Serial1. ...


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