Can anyone turn digital stopwatch into a timer like stackmat

[larosh12]

I was wondering if any one knows a way to turn a digital stopwatch into a timer like Stackmat that works by putting both of your hands on it . I don't have a problem buying a 25 $ timer but I want to make one myself just for fun.

 

[CheesecakeCuber]

Just buy an iOS or Android app. I think that would be easier than building one.

 

[kcl]

Fingertimer. It's in the AppStore.

Edit: you can put a link into a computer browser, which will be like a wireless tournament display.

 

[larosh12]

I have a timer for my PSP also that works fine for me but I was interested in making a seperate one. Still .... Thanks for the reply