Need some indicators? We are big fans of these diffused green LEDs, in fact we use them exclusively in our kits. They are fairly bright so they can be seen in daytime, and from any angle. They go easily into a breadboard and will add that extra zing to your project.

• Pack of 25 diffused green LEDs
• 5mm diameter
• 565 nm wavelength
• 2.2-2.5V Forward Voltage, at 20mA current
• 40 mcd typical brightness (green LEDs will appear brighter to us than other colors)
• Datasheet

If you need some help using LEDs, please read our "Introduction to using LEDs" tutorial for any electronics project.