var myTimer_start = [0, 0, 0];       // memory

var tomillis = 1000;

var myAction = [false, false, false];

var r = 20;

​

function multi_timer(sel) {

  let dtime = myTimer[sel] * tomillis;

  if (millis() > myTimer_start[sel] + dtime) {

    print(year()+"-"+month()+"-"+day()+" "+hour()+":"+minute()+":"+second()+"/ "+millis()+" timer_" + sel);  // note millis are counted from program start

    myTimer_start[sel] += dtime;           // auto restart

    myAction[sel] = !myAction[sel];

  }

}

​

function setup() {

  createCanvas(400, 400);

  rectMode(CENTER);

  frameRate(10);

}

​

function draw() {

  background(200,200,0);

  for (let i = 0; i < 3; i++) {

    multi_timer(i);

    if (myAction[i]) fill(200, 0, 200, 127);

    else             fill(0, 200, 200, 127);

    let pos = 150 + i * 50;

    rect(pos,pos, r, r);

  }

  if ( r++ > 300 ) r=20;

}