Hi! In this Instructable, I will be showing you how to create a LED bulb that you can connect to an Arduino, or a battery. You can incorporate this into your existing projects!
You will need:
An Old Light Bulb
Step 1: How Out the Original Bulb
Step 2: Set Up the LED
Step 3: Poke the LED in the Bulb
Step 4: Add to Your Existing Project
This makes a good indicator light for your existing project. Enjoy! (Sorry for the bad quality photos I'll try to update them!)