I recently bought an SKR v1.3 and, after struggling with the stallguard feature in the attached TMC5160s, I put a scope on it and was shocked to find 2-3V of ripple on the 5V switching power supply even though the 24V input had only 120mV of ripple going in. They do seem to have put some thought into the filter network on the 3.3V supply (not that it helps much with right around 1V of ripple), but there's no such network on the 5V supply. Just curious if this is typical, or if my board is just defective--has anyone tried putting an oscilloscope on yours?
