Originally Posted by
bigkevin61
Sorry, I wrote that and didn't read it back to make sure it made sense.
The NBv3 has 2 standard LED configurations:
A single Main LED off the "High-Power LED Pad L-"
OR
A Tri-LED in which you could wire TWO of the 3 LED's in parallel off the "High-Power LED Pad L-", AND you could wire the 3rd LED off the "FOC LED pad L-"without of use of a PEX (not needing a PEX for FOC was a change from the NBv2, and a welcome change!).
The NBv4 now has 3 pads, has 3 standard LED configurations:
A single Main LED off the "High-Power LED Pad L1-"
OR
A Tri-LED in which you could wire TWO of the 3 LED's in parallel off the "High-Power LED Pad L1-", and the 3rd LED off the "High-Power LED Pad L1-"without of use of a PEX, in which you can use as FOC.
OR
A Tri-LED in which you could wire ONE of the LEDs off the "High-Power LED Pad L1-", the SECOND off the "High-Power LED Pad L2-", and the THIRD off the "3rd Channel Remote PEX" pad, allowing the board to do "Color Mixing", which includes configuring FOC.
From the NBv4 Manual:
"The 3rd channel of the board controls an external and remote Power Extender and is required only if 3 channel color settings are required, or to drive an more important load. A single color LED with a white Flash on Clash (BBW tri-cree for instance) could be wired with the 2 identical dice on the first channel (L1-) while the FoC die goes to the second channel on L2-"
So like Tom said, the NBv4 has better components, and can do "more" (like control 3 separate color channels, or control Neopixels).
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