Situation: You want to include a timer interrupt service routine in an assembly language program for an AVR-based Arduino. The program will be written, assembled and uploaded using the Arduino IDE.

"So you are running your void loop() code, where you keep checking forever if some input or signal level or other reading is really necessary.\n", ...

SYUAB 9Pcs NE555 DC 12V Delay Timer Relay Switch Module Adjustable Module to 10 Second Converter Timer 1pc DC 12V 24V Adjustable Cycle Times Switch Module Delay On Off Timer Delay Switch Module Types ...

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 ...

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. The project here ...