Do you like joining different sports team in your school? It does not only lets you meet other friends but also improve your skills and talents. Sometimes these teams are not fully supported by the school administration due to low budget and so they lack the equipments needed during practice or even the actual game.

Like this pace clock that is commonly seen in games like swimming and track and field, it is quite expensive to have one but this mod is made cheaply with only less than $250 materials. It is controlled with a smart phone with understandable instructions on how to operate and very responsive.

It is possible that this clock can still be assembled with much cheaper materials.