Several months prior to the annual Berkshire GeoBash Mega Event in Massachusetts (USA), I was contacted to see if I’d be interested in creating a gadget cache for their event. I said “Yes!” of course. I never dreamed it would end up as a top-ten favorited cache in my state.
For my first Arduino Gadget Cache, I wanted to use LEDs. I spent a lot of time searching for just the right lighted buttons and working through prototypes. It looked great in my shop. I took it outside for a weathering test, and I noticed that the LEDs just weren’t bright enough under the sun!