Arduino and UV Lights for Glow in the Dark Decorations

My wife, MrsRedBeard, made some glow in the dark heads for Halloween decorations. They glowed but very dim and not for very long so why not kick it it up with UV lights. But why stop there when there’s an Arduino laying around?

Using the Arduino I made it so that the lights fade in to brightness, blink, hold for a few seconds then turn off for a while and loop.  The code for this can be found on GitHub.

I’m not getting real in-depth on how to do this because most of it is really basic. If you want additional information just Contact us.

Parts / Materials

  • Arduino
  • UV LEDs from Adafruit
  • An old CAT 5 cable
  • 2 screw terminals
  • 2x 2N3904 Transistors
  • Wire
  • A salvaged project box
  • Styrofoam ring cut in half
  • A empty circuit board

Pictures of the project


Wilderness Survival Part 1

What is Wilderness Survival?

Wiki entry for Survival Skills states that “Survival skills are techniques a person may use in a dangerous situation”. Dared to Survive says that Wilderness Survival is the ability to survive in the wilderness throughout various seasons and weather conditions.

People are most likely to use these skills when they have found themselves to be lost or injured in the wilderness.

Rules of Three

If you know a little about the outdoors then you have probably heard of the rules of three. These are very basic rules to follow when establishing priorities of survival.

  • 3 minutes without air
  • 3 hours without shelter
  • 3 days without water
  • 3 weeks without food

In addition to these people often look at psychology and the human need for companionship as a key component of any type of survival.

Situational Awareness

  • Make Lists
  • Threats
    • Injury
    • Weather
    • Terrain
    • Wildlife (to include plants, insects)
  • Resources
    • Know what resources you may have based upon geographic
    • Establishing a safe place to for your shelter.
    • Explore (wagon wheel method) area for resources.
  • Not taking unnecessary risks.


FM 21-76 Army Survival Manual

Survival Actions at survivaliq.com



Consider this to be a living document and will be updated and revised when necessary.