https://github.com/banjerr/busyornot

Another Arduino exercise, re-factored with Node
https://github.com/banjerr/busyornot

Last synced: 6 days ago
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Another Arduino exercise, re-factored with Node

• Host: GitHub
• URL: https://github.com/banjerr/busyornot
• Owner: Banjerr
• Created: 2017-01-22T18:53:39.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2017-01-23T00:10:27.000Z (almost 8 years ago)
• Last Synced: 2024-11-14T18:54:48.926Z (2 months ago)
• Language: JavaScript
• Size: 29.4 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

        
# busyOrNot?

Another Arduino exercise that I've re-factored to use Node js with the Johnny-Five library. Basically, the little dial (potentiometer) speaks to the servo to tell it what it's "angle" should be; the idea was to have the servo arm point to a specific "state", to let others know if the person was busy or not.

I think I might use this as the basis for a "bed time traffic light" for my daughter; with the addition of some photo-resistors to check how much light is coming in.

![pic!](https://github.com/Banjerr/busyOrNot/blob/master/busyOrNot.gif)

## original C/C++ Arduino code

```c

/**

 * BUSY OR NOT?

 * by Benjamin Redden

 */

#include 

Servo myServo;

int const potPin = A0;

int potVal;

int angle;

void setup() {

  myServo.attach(9);

  Serial.begin(9600);

}

void loop() {

  potVal = analogRead(potPin);

  Serial.print("potVal: ");

  Serial.print(potVal);

  angle = map(potVal, 0, 1023, 0, 179);

  Serial.print(", angle: ");

  Serial.print(angle);

  myServo.write(angle);

  delay(15);

}

```

## refactored, Node JS (Johnny-Five) code

```javascript

'use strict'

/**

 * BUSY OR NOT?

 * by Benjamin Redden

 */

const five = require('johnny-five'),

  board = new five.Board();

board.on('ready', function() {

  let myServo = new five.Servo(9),

    potPin = new five.Sensor({

      pin: "A0",

      freq: 250

    }),

    potVal,

    angle = five.Fn.map(potVal, 0, 1023, 0 ,179);

  // get the current reading

  potPin.on('data', function(){

    potVal = this.value;

    myServo.to(angle);

  });

});

```