Avoiding iPad drain
Had an interesting problem today. My iPad Pro battery isn’t as good as what it once was, so the last thing I want is for the SP-404 MkII to drain it as well - but initially I couldn’t figure out how to stop the iPad always powering the SP, with the SP ignoring its own batteries.
Finally got it sorted - the trick was to use a USB-C to USB-A hub, then a USB-A->USB-C cable to the 404.
USB-A is fine for MIDI and audio, but can’t carry enough power for the SP-404. As a result, the 404 falls back to internal batteries, which is exactly what I want.