servo pid control for robot claw

claw.js

console.log(123);
let i = 0;
/*setInterval(() => {
 analogWrite(D2, i, {freq: 50});
  console.log(i);
  i+=0.1;
  if (i > 1) i = 0;
}, 500);*/

const min = 0.02;
const max = 0.125;
const set = n => analogWrite(D2, n/1000, {freq: 50});

const open = () => set(20);
const close = () => set(125);