Welcome to Robot Dialogs. This is a place where I will record my progress, mistakes, errors, failures, lessons learned and hopefully occasional success in my designs and implementations of robots and other technical endeavors. I will try to make it as educational, informative and entertaining as I can...
I've got an epic St. Patty's Day planned for this Saturday and I thought: wouldn't an LED-ified hat be awesome? Then I thought: "I have to. It's a moral imperative."
A couple days shopping around for a bowler hat and green LEDs and here's the result:
The LEDs were mounted by using a new (sharp) x-acto knife blade to slice a single small slot in each LED position. I pinned a shamrock pattern to the hat first... The circuit was wire wrapped not soldered. Once all the LEDs were poked through the hat I used copious amounts of hot glue to make them permanent. A 10 kO pot is in line with a 9 volt battery to current limit (and provide a brightness control). A Velcro wire management strap was sacrificed and hot glued in the brow to hold the battery in place. The circuit:
The top of my head does touch the top of the hat but there's actually just enough room in the front tip for the battery. It fits quite nicely... "I was thinking of the immortal words of Socrates, who said, "... I drank what?""