Arduino Weirdness

So last night I got the breadboard out and hooked it up to the Arduino, and built out the complete circuit for my Ambient Web Metrics project that I’ve been working on. Got the supporting code attached to the other two websites, and ran some tests.

As a description of how this works, a single byte of data is being passed to the Arduino via USB/TTY. Depending on what that byte is, one of three LEDs (connected to Digital IO pins 11, 12, and 13), will light up.

Everything worked fine. Until I shut off the Arduino0015 app, and then regardless of which source I come from, the LED in pin 13 will blink. And only that one.

Very weird, eh? Something to puzzle over this evening after my ride.