PCB Etching Using Toner Transfer Method

What is the fun in making robots if you can’t make your own circuit boards? This PCB etching tutorial describes a step-by-step process to MAKE your own circuit board. There are many tutorials already available on etching. Each method uses different materials and I have used hydrochloric acid and hydrogen... Read more »

Home Molecular Genetics

Working directly with DNA isn't only for the labs of CSI, agribusiness, and headline-grabbing research institutions. It's basic chemistry, but it uses the molecules of life. You can even do it at home. This project explains how you can isolate and even "fingerprint" some of your own DNA. Read more »