The problem is, there is no data sheet. Wanting to use this chip, [David] turned to sandpaper to figure out the pinout of this chip. The best example of a product that came with this chip is a ...

In the CAMI system, sandpaper grits range from 24 to 1,000 (and sometimes higher), which corresponds to P12 to P2,500 in the FEPA system. The CAMI system predominates in North America. While it ...

For small batches or one-off parts, we might reach for a few pieces of sandpaper to smooth out these rough edges. While that might work for a small number of parts, it’s not always the best or ...