Guitar effect shield for Maple

[Okie] designed this audio effect shield for Maple. You’ll remember that Maple is a prototyping system built around an ARM processor, so there’s plenty of power and speed under the hood. First and foremost, the shield provides input and output filters to keep noise out of the system. From there a set of potentiometers let you change the effect, with the manipulation like echo, distortion, and ring modulation happening in the firmware.

Comments

  1. Javajunkie says:

    And now to design an arduino equivalent.

  2. Yippie-do-da!

    I have no idea what this does… But being a guitarist I feel that I must celebrate the marvellous instrument’s rare appearance on HaD.

    Peace.

  3. qwerty says:

    Most of the noise you hear in the samples is not due to the conversion but rather to the opamp being used. For these applications a very low noise one is preferable, along with multiple cells filters.

  4. zool says:

    looked at this and thought cool!, then listened to it, :/ not what i was expecting
    i’ve heard similar things but was expecting more because of the arm processor

  5. Travis is a high school teacher and coach in a small South Texas town for eleven years. His love for gadgets began at a very early age, and he has been a cross between a jock and a geek for most of his life. He has two boys (ages 5 and 2), and a wonderful wife who lets him be a gadget freak

  6. Woofpickle says:

    As someone who has had a blackberry, and completely disassembled it to try and get it to work again: Your fix is meaningless if the springs in the rollers have corroded away.

    Water damage and smart phones…Who’da thunk it?

  7. M4CGYV3R says:

    Seems like you would be better off using a DSP or some simple components(resistors, caps) in the right order. I’ve built entire envelope followers, wah pedals, and things of that like without ever using an IC bigger than a transistor.

    Also, if they’re not building the Maple thing themselves, it’s no better than an arduino.

  8. DeFex says:

    For about the same as a maple and the added work you could get a spin semiconductor dev board for their little DSP, which is quite easy to program and sounds really good.

  9. noah vawter says:

    @defex, yeah, if you know what you are doing, you can always make something cheaper and more specific. I’m excited about the Maple guitar effects because it’s still affordable, and it will get lots of users’ and players’ eyes in one place developing at the same time. If ya didn’t know, it’s lets you use virtually the same dev environment as Arduino. Thanks for the links to http://diystompboxes.com and http://spinsemi.com I’m always interested in new DSP hardware and DIY music equipment!

  10. they were talking about this over at the puntz website. it was beginning to develop into a firey conversation.

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