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Add MakeyMakey node and npm

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Dave C-J 2014-07-08 22:56:58 +01:00
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<!--
Copyright 2014 IBM Corp.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<script type="text/x-red" data-template-name="makeymakey">
<div class="form-row">
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="makeymakey">
<p>Provides "keyboard" like input from a MakeyMakey device.</p>
<p><b>Note:</b> this uses the hidstream npm module that by default only
supports the basic keyboard keys and NOT the mouse inputs, fn keys,
keypad keys, cursor keys etc. This means that the extra mouse emulation jumpers
won't work.</p>
<p>The MakeyMakey can of course be re-programmed to re-assign the keys.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('makeymakey',{
category: 'advanced-input',
color:"#6da082",
defaults: {
name: {value:""},
vid: {value:"0x1b4f",required:true},
pid: {value:"0x2b75",required:true},
cr: {value:false}
},
inputs:0,
outputs:1,
icon: "usb.png",
label: function() {
return this.name||"makeymakey";
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>

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/**
* Copyright 2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var RED = require(process.env.NODE_RED_HOME+"/red/red");
var hids = require('hidstream');
function MakeyNode(n) {
RED.nodes.createNode(this,n);
this.vid = 0x1b4f; // MakeyMakey vendor ID
this.pid = 0x2b75; // MakeyMakey product ID
var node = this;
//node.log("Want:"+node.vid.toString(16)+":"+node.pid.toString(16));
var path = null;
var tout;
var click = false;
var keylookup = { "44":"space", "82":"up", "81":"down", "79":"right", "80":"left",
"26":"w", "4":"a", "22":"s", "7":"d", "9":"f", "10":"g" };
var findmakey = function() {
node.log("looking for MakeyMakey");
var devices = hids.getDevices();
for (var dev = 0; dev < devices.length; dev++) {
//node.log("Find:"+devices[dev].vendorId.toString(16)+":"+devices[dev].productId.toString(16));
if ((devices[dev].vendorId == node.vid) && (devices[dev].productId == node.pid)) {
path = devices[dev].path;
node.log("found MakeyMakey at: "+path); //path = "0003:0004:00";
break; // stop on first match
}
}
if (path === null) {
tout = setTimeout( function () {
findmakey();
},15000);
}
}
findmakey();
if (path != null) {
try {
node.makey = new hids.device(path);
node.makey.on("data", function(key) {
var msg = {payload:[]};
//console.log(key);
if (key.modKeys[0] === "shift") {
for (var keys = 0; keys < key.keyCodes.length; keys++) {
node.log(key.keyCodes[keys]+" : "+keylookup[key.keyCodes[keys].toString()]);
msg.payload.push(keylookup[key.keyCodes[keys].toString()]);
}
msg.payload = msg.payload.join();
node.send(msg);
}
else if (key.modKeys[0] === "ctrl") {
if (key.charCodes.length === 0) {
click = !click;
(click) ? (msg.payload = "click") : (msg.payload = "clock");
node.send(msg);
}
}
else { console.log(key); }
});
} catch(err) { node.warn("can't open MakeyMakey: Do you need root access ?"); }
}
else {
findmakey();
}
this.on("close", function() {
if (tout) { clearTimeout(tout); }
if (node.makey) { node.makey.device.close(); }
});
}
RED.nodes.registerType("makeymakey",MakeyNode);

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node-red-node-makeymakey
========================
A <a href="http://nodered.org" target="_new">Node-RED</a> node to read from a MakeyMakey input device.
Install
-------
Run the following command in the root directory of your Node-RED install
npm install node-red-node-makeymakey
Pre-reqs
--------
As this requires an underlying npm this also requires it's pre-reqs, see <a href="https://www.npmjs.org/package/node-hid" target="_new">Node-hid npm</a> for more details.
- libudev-dev (Linux only)
- libusb-1.0-0-dev (Ubuntu versions missing libusb.h only)
Usage
-----
Provides "keyboard" like input from a MakeyMakey device.
This uses the hidstream npm module that by default only supports the basic keyboard keys and **NOT** the mouse inputs, fn keys, keypad keys, cursor keys etc. This means that the extra mouse emulation jumpers won't work.
The MakeyMakey can of course be re-programmed to re-assign the keys - but this node doesn't know about that...
Known Issues
------------
Every now and then something causes the MakeyMakey HID to become detached (lose focus) from this app and re-attach to another (the in focus) app... whereupon the emulated keys will end up in the wrong window... - Any ideas on how to stop this would be greatly appreciated - but I suspect it's a fundamental issue with the MakeyMakey pretending to be a HID.

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{
"name" : "node-red-node-makeymakey",
"version" : "0.0.1",
"description" : "A Node-RED node to read from a MakeyMakey input device.",
"dependencies" : {
"hidstream": "0.0.3"
},
"repository" : {
"type":"git",
"url":"https://github.com/node-red/node-red-nodes/tree/master/hardware/makey"
},
"license": "Apache",
"keywords": [ "node-red", "makeymakey" ],
"node-red" : {
"nodes" : {
"makeymakey": "42-makey.js"
}
},
"author": {
"name": "Dave Conway-Jones",
"email": "ceejay@vnet.ibm.com",
"url": "http://nodered.org"
}
}