If the Arduino + LED consumption is low enough a single USB charger could power
both, and a separate 10V supply would then just do the 7-segment.
Depends on the relative costs of various options, cheap USB supplies are easily
sourced.
If the Arduino + LED consumption is low enough a single USB charger could power
both, and a separate 10V supply would then just do the 7-segment.
Depends on the relative costs of various options, cheap USB supplies are easily
sourced.