I found one other post on this but not sure I followed the end solution. Bottom line: If I want the whole system on 5v, have no midpoints (just endpoints), and all my devices are 5v compatible, is it as simple as connecting 5v to the 3.3v terminal of the 4-pin connector on the “host” Endpoint?
Check out “Alternate 1” under the power section here SparkFun QwiicBus Hookup Guide - SparkFun Learn for a quick rundown of how to power the system @ 5v
It’s not entirely clear to me whether a midpoint is required or not, so I’d probably grab the kit instead SparkFun QwiicBus Kit to ensure if it is needed I’d have one…the part in the hookup guide about needing to open the bypass jumper on the midpoint makes me think it might
Update This thread describes how someone connected 2 endpoints…but frankly it still seems easier to get the kit to me and just use the MP too for simplicity’s sake