Owning an oscilloscope is a real gamechanger and these ... he wants to work on things like Commodore 64 computers, so 20MHz should be just fine for that sort of thing. The software looks a bit ...

He figured the oscilloscope was the tool best suited for the task, but he needed a way to pick up the fields and feed them into one of the scope’s probes. He ended up building this EFM probe ...