/diy/ - Do It Yourself

>>1769781
Hey fuckwhit, you life in your dad's house. You want to do this shit, either get your dad on board or get your own house.

>missed first portion of instruction net
>only able to check in at tail end
>sound like a total retard not knowing the procedures

ha ha time to kms :^)

I have the need to capture a voltage trace of a solenoid's pull in and drop out because reasons.

The solenoid is powered from a floating power supply.

When I measure from positive I get vastly different readings than when I read from the negative end. Both seem rather noisy. I tried using two probes with nothing tied to ground and doing math to add or subtract the two traces. I tried tying positive or negative to ground. Do I need a differential probe? Should I underground the oscilloscope? Should I just scream and shout and let it all out.

I can do a current trace with a shunt resistor and the thing looks cleaner but for reasons which I cannot specify that is not acceptable.

A non shit differential probe costs as much as my scope, would it actually fix anything or will that show the same noise?