Open 7400 prize: Stair lighting controller kit and 10 stair lights from Hacked Gadgets
This is a Stair Lighting Controller board and all components that are needed to assemble it. These parts will need to be soldered onto the board before use. Please note that the controller does not come with any LED Stair Lights these will have to be purchased individually depending on the number of stairs you have. The kit can power any 5 volt 20mA stair lights, each of the 10 outputs can power up to two of this type of stair light.7400 contest, contest and tagged open 7400 logic competition 2012.