Menu

Using the 555 timer as an external clock for the Arduino

The Need for an External Clock

Courtesy/Thanks to: Jeff

Description: Often when I’m programming the Arduino, I can be a bit sloppy about time handling. I’ll throw in a delay(1000) without really thinking about it. And, for the most part, that works just fine. The delay() is just to “slow things down a bit”, and I could just easily have written delay(1111) and not really noticed anything different.

There are times, though, when precision counts.

Read full story at: http://totusterra.com/index.php/2009/10/31/using-the-555-timer-as-an-external-clock

Comments

You need to be logged in to add a comment.

Editing and adding
You need to be logged in to edit and add files and urls etc.
Categories & Tags
Popular tags for this:


You must be logged in to add tags.

Inventory & Trading
You need to be logged in to administer your inventory and see sales.
Similar on Ebay
Files
555_diagram.png Wiring diagram for using a 555 as an external timer for the Arduino
555circuitpic.jpg Picture of the 555 external timer for Arduino circuit wiring on protoboard.
555circuitpic.jpg Picture of the 555 external timer for Arduino circuit wiring on protoboard.
Links
totusterra.com/index.php/ Using the 555 timer as an external clock for the Arduino
totusterra.com/555timerca 555 Timer Oscillator Frequency Calculator
Parts used
555 Timer Circuit