User Manual/1. Chordata parts/1.4. Client software

From Chordata documentation
Jump to: navigation, search
Screenshot of the Chordata Blender addon running on Blender 2.79

This should really be one of the easiest parts of all the ones described in this guide. Assuming that you have a PC that can decently run 3D applications, you’ll be good to go. We just need to install some open source software on top of it.

In this article we will describe how the Blender add-on client should be installed and tested, but Chordata is conceived to make the creation of new clients an straight forward process. You can take a look at the list of current clients, or you might be interested on writing your own client.

Installing Blender and the Chordata add-on[edit]

First of all, you will need to get Blender, the powerful open source 3D manipulation software. Go to, get the last version and install it.

Now download the chordata_client add-on that you’ll be able to find at our website.

On Blender go to: File > User preferences. And open the “Add-ons” tab. On the bottom of the panel you will find a button Install Add-on from file click it and browse to the directory where the zip file containing the add-on was downloaded. Select the .zip file and confirm.

That’s it. Did you notice how easy that was? :)

Install addon.jpg

Where did the add-on go?[edit]

You will find the Chordata client functionality on the “Chordata” tab of the panel on the left of the viewport (the toolbox). If you can’t see the toolbox at all try pressing the T key on your keyboard while the mouse cursor is over the viewport. If your layout is completely different to the one in the picture, try going to File > Load factory settings (you might have to re-activate the chordata add-on after doing that)


If you have never used Blender before, you might want to take a look to the basics of navigating in the 3D space on this tutorial.

There will be other Chordata clients in the future, perhaps as stand-alone or web-interface application, so you won’t need to install a completely different software just to make motion capture. But we still think that if you are interested in 3D as an artistic discipline, or even for technical data analysis, you should take a look at what Blender has to offer.

Being a completely scriptable 3D sandbox, its possibilities are unlimited, and new applications show up almost every day.

In our case, we choose it as a base to implement our first and most basic client because, at the beginning it allowed us to easily prototype and experiment, and now it allows us to offer you a complete 3D environment in which to visualize, edit, and export your captures by just extending it a little.

Connecting to the notochord and testing it[edit]

in order to follow this guide your PC should be able to connect to WIFI. If you just have an ethernet port take a look at the other possible network configurations


Let’s see if we are able to see the notochord from the blender add-on

  • Power the SBC with the notochord SD card inserted, wait some seconds for it to complete the booting procedure.
  • Connect your PC to the WIFI network “Chordata-net” that the SBC has now created. The password is “chordata”
  • Inside Blender, open the Chordata tab, and click Connect. You should see the red circle turning green after some seconds, and the state should now have changed to “connected”.

If you can’t connect, double check all the connections. You can try accessing the notochord’s remote console from your browser as described in the second chapter of this manual. If you still can’t access from blender, there might be a firewall on your PC blocking the access. See How to configure the firewall to allow the client talk to the notochord.