I'm working on a custom alarm clock. For the display, I'm using an Arduino Nano to control a 7-segment display made of ninety Neopixels. I have some buttons and an encoder as well.
Based on a 60 mA power draw for each Neopixel and about 40 mA for the Arduino I've calculated a 5.44 ampere current. I want to design the circuit for 6 amperes current (the buck converter I'm using can provide 8, but I shouldn't need that much.) I want to use 1 Oz copper if possible to reduce cost.
The trace width will be 3.56mm for that, which is far too wide. Is there any way I can reduce the trace width?
An idea I had was to split the power input into two 3 ampere power rails, each connected to half the board's components. Would the two rail idea work?