At first I thought my problem was that the "L" LED illuminates whenever "Tx" or "Rx" illuminate. But I made an ever so minor modification to my sketch and got a different blinking response, without that proposed "L" to "Tx/RX" link.
At first I thought my problem was that the "L" LED illuminates whenever "Tx" or "Rx" illuminate. But I made an ever so minor modification to my sketch and got a different blinking response, without that proposed "L" to "Tx/RX" link.