This is a cool LED project I am undertaking. The heart of this project is using the LM3914N (or similar) LED driver. Once completed this can be connected to your sound card or can be connected via a microphone element (still working on this part) for some really cool effects lto light up your room. I connected this via 4xAA rechargables. Guilt free power.
This is my first project and my first instructable so bear with me.
Also this is still a work-in-progress since there is so much I plan to do with this project. I will keep updating this if possible with updates such as not relying on a microphone, driving more LEDs, ect.
Step 1: What you need.
First her is what you will need.
1 - LM3914N LEd driver
1 - 1k resistor
1 - 1M resistor (the picture shows a 10k resistor but I got best results with 1M, play around with this value to get best results)
1 - 1uF electrolytic capacitor
10 - LED (your choice of colors)
Solderless bread board or whatever else you want to build on
4 AA batteres
Switch is optional