Tag: Max/MSP

Posted on

controlling Parrot AR drone2 with Max

5/2014: see latest version here: https://reactivemusic.net/?p=6635

update – Got the drone today and ran successful test of takeoff, rotate, and land. Next thing to check out is how to get the drone on an existing wifi network…

http://nodecopter.com/guides/connect_to_access_point

To work with a WPA network requires installing a patch to the drone. https://github.com/daraosn/ardrone-wpa2

One workaround for school networks would be to use 2 computers, one for the interenet – one for the drone – and then connect them with midi or something.

This is a work in progress. Going to use the node.js code from the Irish train project for the OSC communication with Max.

First, install ar-drone

$ npm install ar-drone

Here’s the generic Max <=> node.js code using OSC. It handles OSC commands bidirectionally.

  • internetsensors/generic-node-OSC.js
  • internetsensors/generic-node-OSC.maxpat
Next step is to plug in the basic drone commands like takeoff and land from the example code.

Here’s the initial drone testing code

  • internetsensors/drone-test1.js
  • internetsensors/drone-test-max1.maxpat
Posted on

en_analyzer~

Echonest anaylsis in Max.

By Michael Dewberrry

I downloaded the fork version from ‘dewb’ as it has been converted to run in Max6. It looks  like the object retrieves all of the analysis data. It would actually be instructive to read the source code to see how they implemented libcurl and JSON for the http: requests.

https://github.com/Dewb/en_analyzer 

Posted on

domain ping machine in Web Audio

A ‘mini’ version of the Google domain ping synthesizer from the internet-sensors collection (Using the Mashape API). This one runs in Web Audio, using the Web Audio Playground with OSC.

Looks like a card game. Anyway it sounds cool. Doesn’t have the panning of the original, but it has an organic sound due to portamento in frequency changes, and more ‘beating’. Here’s a short excerpt.

Another example of Max controlling WAP https://reactivemusic.net/?p=6193

download

https://github.com/tkzic/WebAudio

folder is: WebAudio/osctest/

files

  • wapOSCserver-ping.rb
  • wapPingTest.maxpat
  • WAP patch: – ping2 (5 osc’s -> 5 gains, -> 1 master gain) – ping2.json
  • Web Page: WebAudio/index.html

instructions

update: you can run an online version of WAP Web client at http://zerokidz.com/wap/index.html – If you load this page, skip to step 3.

1. run the node webserver in WebAudio

node nodeserver.js

(it will run on localhost port 8081 – for example http://127.0.0.1:8081)

2. In Chrome web browser, run: 127.0.0.1:8081/index.html

3. From a terminal window, go to the osctest/ folder and start the server by typing:

./wapOSCserver-ping.rb

4. Load the Max patch:

wapPingTest.maxpat

5. In Chrome, click the OSC button – the ruby server should open a socket connection

6. Also in Chrome, load the patch: ping2 (note that there is a json copy of this patch ping2.json that can be pasted in, if it doesn’t show up in the menu)

6.5 In WAP, Click the square buttons on the 5 Oscillators to start them playing. You should hear sounds at this point.

7. Now back in Max patch – click green toggle to start polling and you probably want to increase the polling rate to about 50 ms instead of 1000 ms

suggestions
  • If it doesn’t seem like there is much action in the patch, try adjusting the FREQ_MULT and GAIN_MULT inside the ruby script.
  • You will probably also want to open the developer javascript console in Chrome to see what is going on.