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![const five = require('johnny-five');
const board = new five.Board();
const Firebase = require('firebase');
const relays = new Firebase('https://io16natal.firebaseio.com').child('relay');
board.on('ready', () => {
const lamps = {
'01': new five.Relay(8),
'02': new five.Relay(9),
'03': new five.Relay(10),
'04': new five.Relay(11)
}
relays.on('value', (snap) => {
snap.forEach((lamp) => { lamps[lamp.key()][lamp.val()]() });
});
});
Example](https://image.slidesharecdn.com/44dd44d7-790d-4c36-a180-7e4515028ec2-161025011545/85/From-front-end-to-the-hardware-36-320.jpg)
Uploaded byHenri Cavalcante
From front-end to the hardware
This document discusses using JavaScript and Node.js for hardware control and robotics. It introduces Johnny-Five, an open-source framework for robotics programming in JavaScript. It also discusses Firmata, a protocol for communicating with microcontrollers from software. Examples are provided of using Johnny-Five to control an LED on an Arduino and comparing capabilities of single boards like Raspberry Pi, Intel Galileo, and ESP8266. NodeBots are defined as robots controlled via Node.js.
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From front-end to the hardware
- 1. From front-end tothe hardware Henri Cavalcante
- 2. + From front-end tothe hardware
- 5. Henri Cavalcante @henricavalcante (ESP8266 Firebaseready givaway #fif2016)
- 6. How many ofyou?
- 7.
- 10.
- 12. <!DOCTYPE HTML PUBLIC"-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>Simple JavaScript Example</title> <script type="text/javascript"> <!-- Hide the script from old browsers function containsblank(s) { for(var i = 0; i < s.value.length; i++) { var c = s.value.charAt(i); if ((c == ' ') || (c == 'n') || (c == 't')) { alert('The field must not contain whitespace'); return false; } } return true; } // end hiding --> </script> </head> <body> <h2>Username Form</h2> <form onSubmit="return(containsblanks(this.userName));" method="post" action="test.php"> <input type="text" name="userName" size=10> <input type="submit" value="SUBMIT"> </form> </body> </html>
- 17. NodeJS pros: ● Fast,very fast ● Asynchronous ● Event-based ● Top 1 language in the world
- 22. Johnny-Five Johnny-Five is theoriginal JavaScript Robotics programming framework. Released by Bocoup in 2012, Johnny-Five is maintained by a community of passionate software developers and hardware engineers. Over 75 developers have made contributions towards building a robust, extensible and composable ecosystem. +
- 25. Firmata Firmata is aprotocol for communicating with microcontrollers from software on a computer (or smartphone/tablet, etc). The protocol can be implemented in firmware on any microcontroller architecture as well as software on any computer software package (see list of client libraries below). Flash your Arduino with Standard Firmata: Connect the Arduino to your PC using the USB Cable Open the Arduino IDE, select: File > Examples > Firmata > StandardFirmata Click the "Upload" button. The text "Done Uploading" will appear once the upload is complete.
- 29. Example const five =require('johnny-five'); const board = new five.Board(); board.on('ready', () => { (new five.Led(13)).blink(500); }); void setup() { pinMode(13, OUTPUT); } void loop() { digitalWrite(13, HIGH); delay(500); digitalWrite(13, LOW); delay(500); }
- 30. Single boards Raspberry Pi3 Analog Read no Digital Read yes Digital Write yes PWM yes Servo yes I2C yes One Wire no Stepper no Serial/UART no DAC no Ping no
- 31. Single boards Intel Galileo AnalogRead yes Digital Read yes Digital Write yes PWM yes Servo yes I2C yes One Wire no Stepper no Serial/UART no DAC no Ping no
- 32. Single boards Tessel 2 AnalogRead yes Digital Read yes Digital Write yes PWM no Servo yes I2C yes One Wire no Stepper no Serial/UART no DAC yes Ping no
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- 36. const five =require('johnny-five'); const board = new five.Board(); const Firebase = require('firebase'); const relays = new Firebase('https://io16natal.firebaseio.com').child('relay'); board.on('ready', () => { const lamps = { '01': new five.Relay(8), '02': new five.Relay(9), '03': new five.Relay(10), '04': new five.Relay(11) } relays.on('value', (snap) => { snap.forEach((lamp) => { lamps[lamp.key()][lamp.val()]() }); }); }); Example
- 37. http://nodebots.io/ NodeBots are (quiteliterally) robots of one kind or another that can be controlled via Node. They can have everything from wheels, movable arms and legs, motion detectors, cameras, LED displays, the ability to control cats and so much more. The only limits are your imagination and the components you can find and put together!
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