more output than 5V can provide
This sentence suggests you need more POWER (Watts*), which according to Mr Ohm, is derived from Volts and Amps.
You suggest the 5V is constant, so, you'll need a handful of Amps, or enough millAmps, to ‘power’ the switches and other stuff.,
Post your circuit diagram as built, and we may be able to help.
- not the LA district