Ok, I’ve found another change that I’m including in this BIM thing. In addition to the sound being issued, I’m going to put in a parallel yellow LED to be flashed as well. Then I should be able to reinforce the condition when the optune TTF field generation isn’t able to run. And I got to demo the device on the Adafruit show and tell episode last night. Check’em out at Optune “add on” (the page)