I just finished the promised 2d Seismometer Dashboard widget that uses processing.js. It is based on the excellent, albeit simple, Seismometer widget from Matt Haynes and uses its Unimotion plugin library as well.
Somebody has been asking for a version that graphs all 3 axis in the comments, so here it is!
One could use 3 versions of that seismomenter widget, and choose a different axis for each one, but sadly it does not save the prefs, and so forgets that after a restart, resetting to all 3 graphing the same axis.
My widget is called P5Seismo (from processing’s early name P5) and comes in 3 flavors, without and with two different frame borders – a simple and a larger one.