V1.0 available and soon sold out..
DEC2017: V1.1 available NOW .. the bug of V1.0 is fixed and the overall finish looks much nicer.
download the MOUSER BOM (zipped):
Please remember that there is “only” a gain of 2 in the output buffer. You might want a higher gain. It might be beneficial for DIY assemblers to buy a few resistors of other values (i.e. 33k, 200k, 150k) for the inverting buffers gain setting.
PO32 and PO12:
PO32 as sole drum source: