Led Pen with Adapter for connecting different color LEDs

This project was conceived to do some fun with LED long exposure photography. However, most of instructables I saw spoke about creating different pen's for each color LED, this led to the creation of the new ultra-low cost led pen with changeable LED port.


I have more detailed explanation of building on my website along with other projects @

http://www.kunaldoshi.com/home/projects/led-projects/led-pen-with-adapter-for-connecting-different-color-leds


and pics uploaded on flickr:

http://www.flickr.com/photos/12039238@N05/

Step 1 Things Needed & Circuit Diagram

1. Old Dry erase marker pen
2. 2 AAA batteries
3. Push Button Switch
4. Wire jumper/bare wire
5. Any small screw
6. Glue gun
7. Different Color Leds
8. Any female connector which has solderable cylinders on the other end

2. Circuit Diagram