I have a servo connected to a raspberry pi zero w that is used to actuate the deadlock on my door. There is a physical pushbutton on the door that I would like to use to lock/unlock the door, but I haven’t be able to get that to work. The lock also seems to actuate by itself sometimes, which is not ideal. Here is the code I am running:
Any ideas on getting the physical button to work and how to stop the servo from moving by itself? Thanks!
var lockedState = 2200;
var motorPin = 14;
var buttonPin = 4
var ledPin = 17
var blynkToken = 'blynk_token_here';
// *** Start code *** //
var locked = true
//Setup servo
var Gpio = require('pigpio').Gpio,
motor = new Gpio(motorPin, {mode: Gpio.OUTPUT}),
button = new Gpio(buttonPin, {
mode: Gpio.INPUT,
pullUpDown: Gpio.PUD_DOWN,
edge: Gpio.FALLING_EDGE
}),
led = new Gpio(ledPin, {mode: Gpio.OUTPUT});
//Setup blynk
var Blynk = require('blynk-library');
var blynk = new Blynk.Blynk(blynkToken);
var v0 = new blynk.VirtualPin(0);
console.log("locking door")
lockDoor()
button.on('interrupt', function (level) {
console.log("level: " + level + " locked: " + locked)
if (level == 0) {
if (locked) {
unlockDoor()
} else {
lockDoor()
}
}
});
v0.on('write', function(param) {
console.log('V0:', param);
if (param[0] === '0') { //unlocked
unlockDoor()
} else if (param[0] === '1') { //locked
lockDoor()
} else {
blynk.notify("Door lock button was pressed with unknown parameter");
}
});
blynk.on('connect', function() { console.log("Blynk ready."); });
blynk.on('disconnect', function() { console.log("DISCONNECT"); });
function lockDoor() {
motor.servoWrite(lockedState);
led.digitalWrite(1);
locked = true
//notify
blynk.notify("Door has been locked!");
//After 1.5 seconds, the door lock servo turns off to avoid stall current
setTimeout(function(){motor.servoWrite(0)}, 1500)
}
function unlockDoor() {
motor.servoWrite(unlockedState);
led.digitalWrite(0);
locked = false
//notify
blynk.notify("Door has been unlocked!");
//After 1.5 seconds, the door lock servo turns off to avoid stall current
setTimeout(function(){motor.servoWrite(0)}, 1500)
}
``` var unlockedState = 1000;
var lockedState = 2200;
var motorPin = 14;
var buttonPin = 4
var ledPin = 17
var blynkToken = 'blynk_token_here';
// *** Start code *** //
var locked = true
//Setup servo
var Gpio = require('pigpio').Gpio,
motor = new Gpio(motorPin, {mode: Gpio.OUTPUT}),
button = new Gpio(buttonPin, {
mode: Gpio.INPUT,
pullUpDown: Gpio.PUD_DOWN,
edge: Gpio.FALLING_EDGE
}),
led = new Gpio(ledPin, {mode: Gpio.OUTPUT});
//Setup blynk
var Blynk = require('blynk-library');
var blynk = new Blynk.Blynk(blynkToken);
var v0 = new blynk.VirtualPin(0);
console.log("locking door")
lockDoor()
button.on('interrupt', function (level) {
console.log("level: " + level + " locked: " + locked)
if (level == 0) {
if (locked) {
unlockDoor()
} else {
lockDoor()
}
}
});
v0.on('write', function(param) {
console.log('V0:', param);
if (param[0] === '0') { //unlocked
unlockDoor()
} else if (param[0] === '1') { //locked
lockDoor()
} else {
blynk.notify("Door lock button was pressed with unknown parameter");
}
});
blynk.on('connect', function() { console.log("Blynk ready."); });
blynk.on('disconnect', function() { console.log("DISCONNECT"); });
function lockDoor() {
motor.servoWrite(lockedState);
led.digitalWrite(1);
locked = true
//notify
blynk.notify("Door has been locked!");
//After 1.5 seconds, the door lock servo turns off to avoid stall current
setTimeout(function(){motor.servoWrite(0)}, 1500)
}
function unlockDoor() {
motor.servoWrite(unlockedState);
led.digitalWrite(0);
locked = false
//notify
blynk.notify("Door has been unlocked!");
//After 1.5 seconds, the door lock servo turns off to avoid stall current
setTimeout(function(){motor.servoWrite(0)}, 1500)
}