Ryan, you could reprogram the onboard AT-Tiny 45-20 so that it treats the yellow wire as a serial input, then you could set it up so that when you send it certain characters, it switches the LED on full (100%) for a short period of time then off again - you could vary the period by adding a delay between turning it on and off (probably need to experiment). Google “programming the AT Tiny using an Arduino” - it’s (relatively) easy - you just need to open the Lumen to get access to the 6 programming pins. I did it to convert the Lumen to serial control - the Arduino sketch is in the Lumen section of the forum.