Metronome on Thingy:52

Hi guys,

I just wrote a very basic code aiming at providing the metronome function on the Thingy:52.
I'm posting it here in case anyone's interested...

It was inspired by this much more elaborated Bangle.js app.
However, usage is pretty easy:
1) a short press on the button increases/decreases the bpm
2) a long press on the button changes direction of the setting

The blue led flashes on a long press
The red led flashes when bpm is reduced
The green led flashes when bpm is increased

var dir=1;
var bpm=60; 

function beep() {
  analogWrite(D27,0.5,{freq:440});
  digitalPulse(D29,1,50);
}

function onInit()
{
  setWatch(function(e){
    var isLong = (e.time-e.lastTime)>0.4;
    if(isLong)
    {
      analogWrite(D27,0.5,{freq:392});
      digitalPulse(D29,1,50);
      digitalPulse(LED3,1,100);
      dir=!dir;
    }
    if(dir)
    {
      bpm *=1.1;
      digitalPulse(LED2,1,100);
    }
    else
    {
      bpm *=0.91;
      digitalPulse(LED1,1,100);
    }
    clearInterval(interval);
    interval = setInterval(beep, 60000 / bpm);
  }, BTN1, {repeat:true, debounce:50, edge:"falling"});

  interval = setInterval(beep, 60000 / bpm);
  LED2.reset();

}

save();

Nice - thanks!

Cool, have you thought about 2/4 or 3/4 or 4/4 times and flashing a different led on 1 ?

No, I haven't. The reason is simple to understand: I absolutely know nothing about musicology ;-)

I just made a quick, basic, easy to use metronome, for my girlfriend who's learning to play piano.
Pulsing a LED at regular interval is easy to do, but what do you mean by 2/4, 3/4 or 4/4 times? To easily switch from a X bpm to a X*2/4 or X*3/4 by pressing the button?

take quick look into this

https://en.wikipedia.org/wiki/Time_signature

OK I get it... Well this is far to much elaborated for such a basic app like mine. However it may be something useful for the metronome app . Moreover, Bangle.js and its display would be more adapted to indicate the time signature, compared to the few LEDs on the Thingy:52 :-)

Yes, definitely :)

I did some tests a couple month ago...

1 Attachment

My internal name for this is Feel the Beat because it vibs :)