Breathing LED Arduino : Circuit & Code

LED Never Breathes! MacBook Pro Has Sleep LED Which Pulsates Resembling Human Breathing. Here is Breathing LED Arduino Circuit & Code. Circuit sketch not required. If you can add LED to default BLINK sketch to blink, you can easily use it. It will need only one LED, optionally, you can use a resister for better voltage control. It is suggested to use a resister. Adafruit has a cufflink named iCufflinks which costs $128.00 for a pair (what???). So peoples changed the code a bit to make it working on Arduino UNO or practically any Arduino. We will post later how to make those kind of cufflinks pair at lesser than $1.28. Coding, testing is the main part. Just a hints – fiber optic cable does the work from a Arduino UNO in your wallet, it may be impractical, so practical way also said later in this article.

Breathing LED Arduino : Circuit

Add that LED on Pin 11 and GND. Do not try to alter the code to make it working for Pin 13, it actually demands good knowledge on C++. Here is a crap quality video from our side to show you how actually the thing breathes :

for a basic testing, who will use a high end camera. Here is how human breathes :

It is actually not so easy to create that effect. Apple has patent :

The included sketch named Fade demonstrates the use of the analogWrite() function in fading an LED off and on. analogWrite() uses pulse width modulation (PWM), turning a digital pin on and off very quickly, to create a fading effect.

Breathing LED Arduino : Code

Whatever they charge money, we can create the effect with Arduino and an LED completely free of cost :

You can see in video, it is quite nicely working on Arduino UNO R3.

Breathing LED Without Arduino : Circuit & Code

Yes, it is possible to make breathing LED without Arduino. For that you’ll need this stuffs which are shown in circuit diagram :

Actually, very small ready to use circuits are available at $4 or something like that for getting that effect. This is really practical for creating breathing LED for your iCufflinks. Not always we need coding.