Look what I found in the trash:
Accelerometers! *Real* ones; not the slow, inaccurate little SPI chips I’m used to. From what I can find on the internet, they’re ancient ones built by Bruel & Kjaer, a company that seems to be the European version of PCB piezotronics. Neat.
According to this datasheet, the B&K model 8306 accelerometer has a resolution of 0.000002 g and a range of +/- 10g –pretty spectacular. It has a built-in preamp that outputs 1V per m/s^2, or you can directly access the piezo which gives you 1 nC per ms^-2.
Unfortunately though, they weigh a bit more than a pound each [totaling to 4lb with the aluminum block I machined], which limits what I’d be able to do with them. Now, what does one do with 3 axis’ worth of precision accelerometers? Really big quadcopter maybe…
Also in the trash were some old instrumentation amplifiers and a 20 to 200kHz 24db/octave band-pass filter. That might be useful for something, maybe.