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May 3, 2012
about 10 years ago
an LED strip I purchased for a project comes as a 5m film that has 2 layers, bottom layer is +12 and GND which run the whole length, then every 2" there are 4 solder points that connect each 2" piece through to the bottom layer. the top layer follows a kind of S pattern, holding a strip so the current goes left to right you have +12 on top connected to bottom layer and led1, GND only connected to bottom layer. led1 - is now on the bottom, does a zig zag over, up, over to led2 +, - is again on bottom, moves right, has 2 resisters that bring it back to the top trace, over to led3 +, - at the bottom moves to the right and connected through to bottom trace with the top trace present, but only a solder point to get to the bottom trace...end result is you can connect power at any set of solder points to power the entire strip of up to 5m...
about 10 years ago
Has anyone successfully used this shield in combination with the official ethernet shield?
I'm also a little confused on the exact way I should wire this up, I need to control around 14 channels of LED light strips, each one draws about 500ma@12V.
The strips will have a common anode tied directly to +12V regulated power supply, with the cathode of each strip tied to the drain of an IRF510 mosfet...
I successfully tested a single strip by tieing a digital output to the irf510 gate(130ohm resister to arduino, 10k resistor to ground) and the irf510 source connected to ground.
By my logic, all I believe is necessary is to move the connection from my digital pin, to the signal pin for a channel...
If anyone knows much about this, I would appreciate either confirmation that my logic is not flawed, or a smack on the hand before I hook it all up and fry something...