gtridr

This is awesome to see. You've inspired me to start framing out a variation on this mod utilizing the Deluge's ability to itself act as a USB MIDI host as of v3.

I'm thinking I can maybe even do this without having to desolder or impact the functionality of the USB port or the 9v barrel jack. By using 3S battery management boards instead of a powerbank & then some DC buck converters to get a stable 5V & 9V DC voltage from the pack, I should be able to effectively "plug in" the deluge with a DPDT slider switch & then tap off the barrel jack to charge the pack, as well.

Since the pack will have a disconnect, the deluge will still be running off it's original internal battery, and would charge itself from the reserve pack. The hub would receive 5V directly from a separate 5V regulator (looking for a hub that'll accept ~5v2.5A on a barrel jack or something & output >500mA per port such that i don't need to hijack the USB 5v pins)

Here's the latest complete diagram I made, I think I'll definitely need a relay or something to prevent from backfeeding the output of the 9v buck converter when in charging mode but overall I think the plan feels solid. I'd also like to engineer a 9V cutoff circuit for the batteries to prevent overdischarge. There doesn't seem to be any off-the-shelf boards for this. I also wanna install a display along the bottom edge to reflect battery charge status.

Lemme know if y'all have any suggestions or criticisms. Definitely pushing a bit outside my comfort zone with this mod but the premise of powered USB ports on this machine is too good to pass up. The gooseneck light sold me.

EDIT replaced diagram w/ a slightly newer one, this time with DPDT switches on both input & output to switch between charge//discharge modes (in actuality these will both be DPDT relays, controlled by a single DPDT ON-OFF-ON switch