The Smart, Stealth LED Blinkenlight

Step 9 Make the main circuit board weather-resistant.

I had been putting off making the main circuit board weather-resistant. I figured I could just put the vibration sensor in some kind of tube and cover the whole thing in sealant. I'd rather have something that you could open, though. I was looking around the house and found that the board fit perfectly inside a sauce cup from a takeout restaurant. Voila!

I set the board in and marked a hole then cut it out with a hobby knife. Then I cut a slot so I could insert the power wire and the LED wire. It seems to work perfectly.