The Best of Instructables Volume I

Dot Matrix Business Card

If your business card is looking too 20th century, how about one with a graphical display on it? By Tom Ward

If my flashlight business card wasn’t advanced enough for you (see “Flashlight Business Card,” page 290), how about one with a full graphical display that can be customized with any number of scrolling messages? This card could be made in quantity for about a $5 parts cost, and is only a little bit more expensive if you’re only making a few. I won’t kid you, this is not an easy design to make—don’t try it unless you have good soldering skills and some experience in electronics. Some of the components are smaller than grains of rice, so it would be useful to have good eyesight as well! Like the flashlight card, ...