An AVR ATmega168, rechargeable 9 volt battery, and two LED drivers power it. One section of their site states that it has over 2500 unique patterns, while another area says 5000 combinations of ...

Have a hard time finding a use for the other 9 volt battery you got in that 2-pack? Look no further that Richard Lawson's charming DIY LED light: 9Vo (l)tive. Just stick one of these suckers on a ...