One repetive issue I face is number of signals from MCU to/from IO that can be isolated. The the case below I want 7 digital signals and an isolated current sensor back, but I lack space for the 7th signal since one module is 25mm in width. One solution is to mount components on the back side, but I prefer to avoid that for a specific reason. Another solution is to make the isolation barrier different or simply ditch one of the signals… I am looking for opto couplers that use less width as well…
