Hello- trying to make this after years of seeing it. When I opened the box_1_sr into the Arduino, verified it and uploaded it says on the instructions it should blink once but it’s still blinking like a heartbeat. I’ve done the instructions twice and it still does it. Doing this with Arduino 1.8.13 and on a windows computer. Thanks!
That is ok, if there is no data to receive from the console, Arduino sends regular a ping to check if there is a connection to the console.