Re:Hardware Hackers Create a Modular Motherboard
by Retric on Wednesday August 19, 2009 @09:36PM
(#774238)
There is little problem in supplying power to a grid like this. It's related to the classic Given an infinite grid of 1 ohm risistors, what is the resistance across a single diagonal? Well known answer: 2/pi ohms.http://answers.google.com/answers/threadview?id=92564
Basically, as the size of the grid increases so do the number of paths to an edge element. The practical limit relates to how much current you can drive through a single, element, but you can always use more than one power connector.
Edit: USB connection it can support a 3 x 3 grid (500 milliamps * 5 volts / 9) ~= 0.3 watts. So 130 of them should equal a low power CPU.
Basically, as the size of the grid increases so do the number of paths to an edge element. The practical limit relates to how much current you can drive through a single, element, but you can always use more than one power connector.
Edit: USB connection it can support a 3 x 3 grid (500 milliamps * 5 volts / 9) ~= 0.3 watts. So 130 of them should equal a low power CPU.