Push Pin Videos

March 14th - 03.14 So it stands to reason that at 3:09pm this afternoon (15:09), you should take a break, have a piece of pie, and remember how to associate the circumference of a circle with its area! Read More...

I had been giving some advice to Mark Malmberg about some art he's been putting together. Wanna see a killer huge solar-powered hanging mobile? From the builder himself: This piece has been a test piece and learning experience. I'll show it in a couple of months at a place called the Lawrence Hall of Science […]

Hello!  Today I actually have stuff to say, and this time these are the news on the Useless Box. Looks like it's time to receive thanks! Remember back in November 2012 when we decided to donate $1100 to Plan Canada from a percentage of past sales of Useless Boxes? They sent us a nice thank […]

What we have today are not Fairly Expensive Tortillas or Fortunately Edible Theremins,  but Field-Effect Transistors. If you know what it is, I will leave you to explore: 1RFZ44N N-Channel FET $2.50 The IRFZ44N is a very powerful useful N-Channel FET, with only 0.0175ohms resistance pushing 20 amperes at 5V! FQP27P06 P-Channel FET $0.95 A […]