Stap 6: De code opslaan
Sla deze code op in een tekstbestand genaamd servo.js:
// Any copyright is dedicated to the Public Domain. // http://creativecommons.org/publicdomain/zero/1.0
********************************************* This servo module demo turns the servo around 1/10 of its full rotation every 500ms, then resets it after 10 turns, reading out position to the console at each movement. *********************************************/
var tessel = require('tessel'); var servolib = require('servo-pca9685');
var servo = servolib.use(tessel.port['A']);
var servo1 = 1; // We have a servo plugged in at position 1
servo.on('ready', function () { var position = 0; // Target position of the servo between 0 (min) and 1 (max).
// Set the minimum and maximum duty cycle for servo 1. // If the servo doesn't move to its full extent or stalls out // and gets hot, try tuning these values (0.05 and 0.12). // Moving them towards each other = less movement range // Moving them apart = more range, more likely to stall and burn out servo.configure(servo1, 0.05, 0.12, function () { setInterval(function () { console.log('Position (in range 0-1):', position); // Set servo #1 to position pos. servo.move(servo1, position);
// Increment by 10% (~18 deg for a normal servo) position += 0.1; if (position > 1) { position = 0; // Reset servo position } }, 500); // Every 500 milliseconds }); });