Have you ever wondered how many clicks a simple ball point pen will last for? To solve this question I designed a pen durability machine. What does this machine do? If you have watched the above video you might have a good idea of its function. Essentially all I designed my machine to do is repetitively click a pen, similar to a nervous office colleague who annoys the entire area with their constant pen clicking. This design is a little louder then Steve down the aisle but still accomplishes the same task.
Read More Pen Durability Cycling Machine
One of my current projects involves cycle counting for durability purpose. My original plan was to build a microcontorller circuit, using the ATMEGA328P, to do the counting and display. I have been building the circuit in my head and was putting together a parts list over the weekend when I realized that I may be putting a lot of time into designing this circuit without first testing my mechanical system. I needed a quick and easy circuit which got me thinking about using a cheap calculator. I’m sure I have seen this method used before, it is probably where I got the idea, but I though I would post something about it anyways. Let me explain how this works.
Read More Calculator Counter