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May 3, 2012
about 3 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 3 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…
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