DSTouch

A DS Touch Screen component plugin for Johnny-Five.

• SparkFun Nintendo DS Screen Kit
• Adafruit Touch Screen (Nintendo DSL digitizer) + Touch screen breakout board

API & Documentation

DSTouch

The DSTouch class constructs objects that represent a single Nintendo DS Touch screen component.

var touch = new DSTouch();

touch.on("change", function() {
  console.log(this.x, this.y);
});

Parameters

Property	Type	Value(s)/Description	Default	Required
address	number	Address for I2C device *	0x04	no

// Example of explicitly specified address
var touch = new DSTouch({
  address: 0x04
});

* The address used by this "backpack" component is 0x04. This can be changed by modifying the value in the firmware.

Properties

Property	Type	Value(s)/Description
x	number	The x coordinate of the present touch point. Will read 1023 if there is no touch point.
y	number	The y coordinate of the present touch point. Will read 1023 if there is no touch point.

Events

• change Fired whenever the [x, y] coordinates of the pointer has changed.

• data Fired as frequently as the hardware can be read.

• down / pointerdown The pointer makes physical contact with the surface, but was previously not touching the surface (similar to the browser mousedown or pointerdown event).

• move / pointermove The pointer is touching the surface and has changed coordinates since the last position was read (similar to the browser mousemove or pointermove event).

• up / pointerup The pointer no longer has physical contact with surface, but was previously touching the surface (similar to the browser mouseup or pointerup event).

NOTE: The word pointer means either capacitive or resistive stylus, or finger.

Backpack Controller

Install Firmware

Using the Arduino IDE, install the firmware to your AVR based microcontroller of choice.

Assembly

Connect To I2C Capable Platform

Arduino UNO

var five = require("johnny-five");
var DSTouch = require("j5-ds-touch")(five);
var board = new five.Board();

board.on("ready", function() {
  var touch = new DSTouch();

  touch.on("pointermove", function() {
    console.log({ x: this.x, y: this.y });
  });
});

Tessel 2

var five = require("johnny-five");
var DSTouch = require("j5-ds-touch")(five);
var Tessel = require("tessel-io");
var board = new five.Board({
  io: new Tessel()
});

board.on("ready", function() {
  var touch = new DSTouch();

  touch.on("pointermove", function() {
    console.log({ x: this.x, y: this.y });
  });
});

Intel Edison MiniBoard

Intel Edison Arduino Board

var five = require("johnny-five");
var DSTouch = require("j5-ds-touch")(five);
var Edison = require("edison-io");
var board = new five.Board({
  io: new Edison()
});

board.on("ready", function() {
  var touch = new DSTouch();

  touch.on("pointermove", function() {
    console.log({ x: this.x, y: this.y });
  });
});

Ploma App

This repo comes with a version of @evhan55's example Ploma app that has been modified to accept input from a socket instead of a Wacom tablet.

To Run:

node eg/server.js

NOTE

The examples shown here are provided for illustration and do no specifically indicate platform support. This component class is expected to work with any platform that has I2C support.