Ultimaker EM leakage
One of the things I had to put on my shopping list for Steven was a basic oscilloscope. It's amazing how useful these things are. I've wanted my own o-scope for a long time, and so I happened to have a bunch of low-cost o-scopes bookmarked. Steven ended up buying exactly the one I would have bought for myself, which is sold by Sparkfun (they're sold out right now, unfortunately).
I wanted to see if I liked the software, so while Steven was printing something on his Ultimaker, I put two of the probes next to the X and Y stepper motors to measure the EM leakage.
Like most modern digital oscilloscopes, you can freeze the trace, and save the data as a CSV file onto a USB key. So, here's what the EM leakage from the stepper motors looks like during a print :