Here’s what they have to say about them:
Seismograf is a PIC based drum module, featuring coding by Jetroid.
There is currently a choice of two PICs which may be used with Seismograf, ‘BD‘ and ‘SD‘. As you might expect, BD contains a range of 8 bass drums, while SD contains a range 8 of snare drums.
The drum sounds are 10 bit encodings of some of our favourite electronic kits from yesteryear.
Here’s an audio demo, using the Euro format versions of these modules:
Pricing and Availability
The Seismograf modules are available now, both assembled and as a DIY project.