bitsmithy.net

I’m currently designing a motor interface board to go between the various XMOS development boards and the Pololu Dual MC33926 Motor Driver Carrier. These are the initial board designs, though I haven’t fully decided whether to include the connections to the XMOS 5V0 and 3V3 lines.

Also note that the autorouter got a little crazy in some places trying to make this work with only 2 layers. There are some places that need cleaning up (e.g. the 3V3 line near the right-hand side).

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3V3 Regulator
Recom R-783.3-1.0

5V0 Regulator
Recom … Continue Reading

There’s a lot of similarity between the seismic imaging problem and ultrasound; the difference is for the most part a matter of scale. In some recent work, researchers brought exploration seismic imaging techniques to the medical ultrasound world with some success. Continue Reading

So it turns out it absolutely is possible to approximate a cosine squared taper in Seismic Unix. The trick is to do a sine or cosine taper, square the whole thing, and then divide by the original.

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I want to take two velocity models stored as SEG-Y and blend them together. It doesn’t strike me as all that strange a request, but I have yet to find a processing package (that we have) that can do it.

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It’s been a little while since I had this website online; we’ll see how long it lasts!