Johnny-Five is a JavaScript framework for robotics that allows programming of robots and microcontrollers like Arduinos from JavaScript code. It uses Firmata, an open-source protocol, to communicate between Node.js scripts and microcontrollers over serial connections. Johnny-Five supports functions like digital reads/writes, analog reads, PWM, servo control, and more on boards like Arduino, Raspberry Pi, Intel Galileo and Tessel. The framework has a large community of developers contributing to its continued development and support for new hardware.

1. Johnny-Five
Making robots with JavaScript

2. Henri Cavalcante
● github.com/henricavalcante
● twitter.com/henricavalcante (Arduino Pro Mini givaway)
● fb.me/henricavalcante

3. Johnny-Five
Johnny-Five is the original
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.

4. Basic Usage
Computer Arduino
NodeJs
Johnny-Five
Firmata
Serial

5. Firmata
Firmata is a protocol 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.

7. 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);
}

8. Single boards
Raspberry Pi 3
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

9. Single boards
Intel Galileo
Analog Read 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

10. Single boards
Tessel 2
Analog Read 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

11. Why [not] JavaScript?
Source: http://arc.applause.com/2016/03/22/javascript-is-the-worlds-dominant-programming-language/#.VvGQnf9aLrU.twitter
● Fast, very fast
● Asynchronous
● Event-based
● Top 1 language in the world
● Large community

12. http://nodebots.io/
NodeBots are (quite literally) 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!

16. ● github.com/henricavalcante
● twitter.com/henricavalcante
● fb.me/henricavalcante