Is the current draw of the LEDs in the 3" LuMini Ring ( .06 A ) x 3 3" Rings ( 180 LEDs) = 10.8A?
And when daisy-chaining multiple LuMini Rings, do the Rings show up to the microcontroller as separate rings, or as one set of x-number of LEDs?
I’d like to use the LumiDrive, but I don’t think I could get it to interact with a RTC, which is why I’m going to use an Arduino clone ( http://www.inviot.com/bz1/ ).
Thanx!
Hi cw8jwh,
That is correct, the max draw of 3 3.3" LuMini Rings will be 10.8A with 3 3.3" Rings. Just remember that this is with all LEDs on full-brightness and white color though it’s always best to overcompensate for current draw so you don’t blow out your power supply. You may want to add in decoupling capacitors for a string of 3 of these. We cover that in more detail in the [Hardware Overview section of our LuMini Hookup Guide.
When you daisy-chain multiple rings, the FastLED Library will not recognize them as separate rings, just an “x” value of LEDs so LuMini Ring #1 would be the first 60 LEDs in your “strip”, LuMini #2 is the next 60 and so on. You could probably modify the example to address each ring individually but it would probably just be easier to define them as portions of your LED “strip”.
I hope this information answers your questions thoroughly. If you have any follow-up questions about the LuMini Rings or other SparkFun products you are using in your project, let us know and we would be happy to help as much as we can.](LuMini Ring Hookup Guide - SparkFun Learn)
Thanx!