Hi Donald,
I can certainly relate to projects that seem to have multiple power supplies each taking up space where you wish you could just have one bigger one that does everything.
The catch with Raspberry Pi power supplies is that the Raspberry Pi boards are officially documented as 5.1V devices.
Many Pi boards do get used with 5V power supplies and work without issue, but we’ve had numerous reports of Pi boards displaying low voltage warnings when combined with USB peripherals and tripping the Pi’s low voltage alert mechanism. This is the reason we recommend use with the official power supplies as it’s one less part to troubleshoot with a supply that is guaranteed and warrantied to work.
