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 ...

Sandpaper is one of the more versatile items to have for any DIY project, useful for a variety of applications. Whether you're smoothing out wood to give it a fresh coat of paint or prepping metal ...

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 ...