Timer interrupts allow you to momentarily pause the normal sequence of instructions taking place in the loop at precisely timed intervals, where you execute a separate set of instructions. ...

You have a timer and clock in just about every single device out there these days, but if you want to build you own, Instructables user GeraldF6 shows you how to do so with a Arduino.

Hardly a week goes by that some Hackaday post doesn’t elicit one of the following comments: That’s stupid! Why use an Arduino when you could do the same thing with a 555?

Runner and Arduino enthusiast Nikodem Bartnik has created a DIY 100m sprint timer which is placed at the finish line and signals the start of timing via an audible bleep from its integrated speaker.

Droplet and StackAR, developed by MIT’s Media Lab, allow users to set timers or program an Arduino using light-based communication. By pressing the tool against a screen, flashes of light can ...