Thawing Colours Audio Example
Submitted by dave on
Taxonomy upgrade extras:
contact mic
DIY Piezo: Rochelle Salt Crystals
Submitted by dave on
Leafcutter John has a great post about making Rochelle Salt, which is piezoelectric, and hence can be used as a contact mic: Real Sound Cookery.
My folks Peter and Judith are both crystallographers, so I thought I'd put them to work in the lab (kitchen) to make some nice crystals.
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Second generation Piezo Preamp boards on their way
Submitted by dave on
Matt put this picture of the next round of Piezo Preamp boards up on his Flickr Stream. I've removed the piezo -ve input, and tied it to ground, which might loose 3dB of gain, but makes figuring out ground planes a lot easier. I couldn't hear the difference when I shorted piezo -ve to ground, and it makes the layout much smaller and easier.
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First set of piezo preamp boards
Submitted by dave on
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