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Unread 30-11-2015, 22:32
AndyB871 AndyB871 is offline
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Neopixels & regulators

So We're toying around with the idea of using Adafruit's neopixels for some fun projects this year, I know other teams have done similar things, and I'm also aware of the rioDuino MXP widget.

That being said, I'm concerned about total current draw and where to source that current. The large neopixel strips can draw upwards of 4 amps. The VRM can only source 2A, Plus the neopixels are finicky about having a common ground between the data signal and power supply.

My Question is this:
If we were to use an arduino as a coprocessor to control these strips, does anyone have any reccommendations for legal 12V-5V >4A DC-DC regulators? Ideas how to ensure that power supply ground & arduino DIO ground is connected?

I'm a Comp-Sci Guy, I've only lightly dabbled in EE, so while I "understand" this stuff, I'm not as fluent as Id like to be (obviously)

Thanks!