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Thank you all so much for making this project a success!
Introducing the Arduino DSP Shield: An Arduino compatible shield with sample sketches for doing audio processing and synthesis.
- an audio input,
- an audio output,
- a programmable control pot
Two A Light Dependent Resistors (LDR), based on cadmium sulfide (CdS). Cadmium pigments based on CdS became commercially available in the mid 1800's and were used in paint by Van Gogh, Monet and Matisse. Now you can use CdS cells too, for those MOST excellent LDR experiments
The shield includes two gold plated adapters, go in from a headphone jack, output to a stereo.
“In truth, the gold standard is already a barbarous relic.” -Monetary Reform (1924), p. 172, John Maynard Keynes .
Just imagine how jealous your economist friends will be when they see this fine barbarous relic!
So there, John Maynard Keynes!
Sample sketches include:
- 1. Audio oscillator (stable, and precise function generation)
- 2. Echo (longer than 30ms delay)
- 3. Reverb (shorter than 30ms delay)
- 4. Phaser effect
- 4. Ring Modulation (sound like a Dalek!)
- 5. Complex Tone generation
All elements are adjustable through the fully programmable potentiometer
Here is a finished board seen from all sides on a turntable;
3D modeling program was used to make sure that the board would stack cleanly under or on top of other shields, with full side access to both jacks, trim pot and programmable control pot.
3D modeling program was used to make sure that the board would stack cleanly under or on top of other shield, with full side access to all jacks and controls. With the supplied software, it is a snap to program with the arduino IDE.
It is small and cheap enough to use for:
- teaching signal processing,
- very fun sound effects,
- unique music processing,
- guitar effects,
- like, totally custom effects boxes,
- function generator,
- telecommunications, etc.
This can be a building block for inexpensive real-time signal processing and synthesis applications. It is even low power, so you can power it right off your usb port. You can plug this into an embedded application to measure sound remotely.
I am so excited by this project because it has exceeded all my expectations;
Here is what you can do with the shield using the supplied software:
- 1. Function generator
- 2. Phasor
- 3. Ring Modulator
- 4. Echo
- 5. Reverb
- 6. Guitar Effects
These are only a small sampling of what the DSP Shield can do.
The possibilities are endless. I feel sure people will use these things for stuff we never thought of.
Where we are NOW:
The latest production run of 10 boards can be seen here and this is fully functional and tested:
The Production Plan:
- Boards are fabricated in China.
- Parts are available from Mouser Electronics, USA.
- A contract assembler is in Milford CT, USA;
WHY WE NEED THE MONEY: The Goal amount will go directly to producing the first production run of the Shields. With volume production, we can keep costs low.
WHY YOU NEED THIS BOARD: Stop having to breadboard your own I/O circuits and select an easy-to-use engineered and professional solution.
Well kickstarters, We need your help!
In order to bring this shield, at a low price, to the arduino community we have
to have at least 100 boards on our initial order.
Blog the Blogs. Tweet the Tweets.
FIGHT the FACEBOOK LIKE with FACEBOOK LOVE.
Back us today and get yourself some DSP Shields.
Thanks for watching our video and for your backing!
Thank you! Thank you! Thank you!
---- Who is this guy anyways?
Doug Lyon is chairman of the Computer Engineering Department at Fairfield University, Fairfield, Connecticut. Dr. Lyon has written three books (two related to signal processing). He is doing this project to learn enough about engineering entrepreneurship in order to teach his students. He is also the president of the Inventors Association of Connecticut. More about him and his publications can be found at http://www.docjava.com
------------Special Reward; the arduino Uno R3. For those who don't have one, or just need a spare, I have created a bundle that includes an Uno; Pictured below:
Risks and challenges
With all projects, there are inherent risks involved and this project is no different. There are basically 3 challenges that we need to overcome.
The first has to do with the availability of the Processor. The board fabricator is off-shore, but has proven themselves as more than able to fabricate the board at a low-cost and high volume in reasonable speed (it takes 6 weeks, using a slow, low-cost, shipper).
The second is the assembly. To keep costs down, we have allowed our assembler plenty of time to fabricate the boards. All components are through hole components, and this creates a great deal of overhead in assembly. This creates a 3 month lead time.
The third is testing and a possibility that something might go wrong after assembly (we hope it wont!). This is why we have a promised delivery date of August. We will order the boards as soon as our project is funded. We plan to under-promise and over deliver!Learn about accountability on Kickstarter
- (60 days)