Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

Cleaning products, candles, cribs, and cosmetics are just a few of the common household items that emit formaldehyde, a colorless, odorless chemical that, when present in the air at levels higher than ...

Dissolved oxygen (DO) is the measure of oxygen gas that is physically dissolved in water. It is a critical parameter for ...