so far this consists of a two-gallon bucket of water and plant food with an electronic timer controlled fountain pump to circulate it. so far i only have four flowerpots but if they work well it could fit about twenty.
it is sort of surprising how they can do a whole mythbusters episode about destructive resonance and not mention any q-factor or time constant. in any case i was feeling bored and decided to play with an adxl202 i had lying around.
this batch suffered from saturation of the lower pastry layer with sugar syrup. it is clear that the syrup has to go evenly into the nut layers but less clear how to make that happen.