AdrianFreed's blog

First Paper Fingerphone Prototype

On Top of Musical Greeting Card (for better sound projection)

Where there is a Whug there is a Way: Triaxial e-textile Breadboard


Rectangular grids are dominant forms in electronics and textiles. Triaxial grids have not been explored in e-textile work so this breadboard is offered to begin these explorations. Triaxial grids sample the plane with higher density and the availability of whug connections as well as warp and woof simplifies circuits by providing a natural power/ground/signal triple.


The basic 3x3x3 configuration is made by sticking conductive copper tape on strips of basket-weaving reed. This is intended to evoke the thousands of year old traditions of basket weaving and invite 3-d explorations.

Card stock is easier to procure and stick the tape to. The idea is to use a substrate that won’t burn when you solder to the tape. Substitute fabric ribbons if you are going to sew to the breadboard instead.

I used pins to lock down two of parallel rows of 3 strips and then slid in the final row, guiding them over and under as required. The example has charlieplexed LED’s soldered on but this is just to start you thinking about how you might use such a dense array of available conductors.

Consider replacing a central strip with one with copper tape on both sides. Work out which conductors are then connected. Now consider sandwiching piezoresistive fabric between intersecting conductors. Can you use this to read an array of pressures sensors?

core memory beading
triaxial textiles
basket weaving

Materials: Cane, copper tape

Techniques: Weaving

The provided swatches will just be the breadboard. Illustrated are some  LED’s controlled by  Charlieplexing.

Circuit Diagram:

Squirrel on the Wire

Shadow of a Squirrel on telegraph pole wires.

Conductive Paper Pressure Sensor and Arduino Teensy

Overhand knot in a strip of carbon-loaded paper becomes an FSR that can be easily connected to your favorite microcontroller (in this case a teensy running with the Arduino C++ tool chain).

This is part of my Fingerphone instrument.

Arduino Music and Sound Weekend Workshop in Berkeley

Dates: July 24 + July 25, 2010 from 10am to 5pm FULL


During this hands-on workshop we will survey Arduino platforms, libraries, shields and programming techniques for a broad range of musical and sound applications. We will learn how to synthesize useful wave shapes including square, sine, triangle and pulses, how to manage polyphony and timing and how to playback and record sampled sounds.

lilypad touch sound example

// XYZ textile pad
// (procedural abstraction)
void analogPullup(int pin, boolean activate)
  pinMode(14+pin, INPUT); // magic to active pullups 14 is the numbering of the analog pins
  digitalWrite(14+pin, activate ?   

Wearable Video Game Platform Bracelet

This bracelet has an Arduino-powered ring of white LED's with a 3-axis accelerometer tilt sensor.

How many interactions/games can you think of with this platform?

There are 3 in the video:

Hand in the air: flashes (because at a party you want to signal that you want someone to talk to?).

Horizontal hand: always illuminates the top LED's whatever rotation your arm has ("smart flashlight")

Spins of the wrist: a blob spins around in the same direction and slows to a stop.

For a commercially produced inertial-sensing band keep an eye out on getymyo

Interactive Soft Circuits and eTextiles Workshop with Arduino Lilypad in Berkeley, California

Dates: Saturday June 26 and Sunday June 27, 2010 from 10am to 5pm


ETextile Materials, Musical Instruments and Portable Lab. Demonstration at Maker Faire

Thanks to Angela Sheehan from Soft Circuit Saturdays for filming this in the challenging, busy, noisy environment of Maker Faire.

MacMix Dyaxis Digital Audio Workstation

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