Arduino Micro: direct access to on-board leds - Electronics Weekly (blog)

Arduino Micro: direct access to on-board leds Electronics Weekly (blog) Except, on the Micro, there is no actual serial bus involved in programming the Arduino, as everything is done over USB. And the TX and RX leds are driven by a couple of pins on the ATmega32U4. They were not intended to be normal Arduino I/Os, but were ...