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Uploading Patches (quick start)

This is the full process for uploading patches to the Episodes. It looks like a lot but you only need to do most of it once. I've only done this on Windows but it should be very similar on a Mac. If you use Linux etc I'd assume you know more than me about this sort of thing!

  • Download the Arduino software, this is the program in which you'll write (or copy/paste) your code for each effect.

  • Download Teensyduino.. This download contains the "libraries" where all the actual code is stored. You don't even need to look at it, the code you write will refer to the relevant sections of code in the libraries when needed, making it run.

  • Download the additional libraries. These are open source audio FX written by myself and others. The patches join these libraries together so they actually make noise!

It's quicker to right click on "Wraa Libraries" (above image) and download them all at once. It will probably download as a zip file that you need to extract:

  • Open the extracted folder, select all folders inside it, then cut or copy them all:

  • Paste them into your Arduino "sketchbook directory", this is probably Documents -> Arduino -> libraries, on Windows at least, To find out where your sketchbook directory is located, open Arduino and go to File -> Preferences -> Sketchbook location.

  • Next download the patches, you can save these anywhere. Each patch has to be in its own sub-folder within this folder for some reason so keep it that way!

That's all the stuff you only have to do once!


  • Take the back off the pedal and connect a serial USB cable from your computer to the pedal, the pedal can be plugged in while you do this but doesn't have to be. Be careful not to touch anything inside the pedal, I'm overstating how fragile it is but it's best to be safe!

  • Pressing the button (red circle) puts it into programmer mode so the patch can be uploaded.

  • Make sure Arduino is configured for the Teensy 4.0 by going to Tools -> Board -> Teensyduino -> Teensy 4.0. (You only have to do this once, the first time.)

  • Click the arrow (in the red circle above) to upload the patch. You should get this "Done uploading" message when it's uploaded:

The new patch should now be uploaded!


In future you only have to follow these steps:

  • Open the patch (the ".ino" file in the patches folder)

  • Connect the USB cable

  • Press the button inside the pedal

  • Click the arrow in Arduino

If you have any trouble, message me :)

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