Blogs

Round Slide Harp

This is the third musical instrument controller I have prepared for Maker Faire. This one combines lessons learned from the previous two: the tablo e-textile controller and the large koto/guitar hybrid from last year.

Django Reinhardt - J'attendrai 1939

Django Reinhardt's solos use many figures inspired by the button accordionists he worked with. These can be seen in the chromatic and diminished chord runs here.

Louis Armstrong - A Rhapsody in Black and Blue (1932)

This clip includes a performer of National tenor guitar playing strums typical of the banjo's role in early jazz bands. This illustrates the transition from banjo to guitars in the jazz rhythm section.

Jimi Hendrix plays Public Saxophone in Berkeley in 1966

Jim Hendrix introduces his band at the 1966 Berkeley Community Theater concert. It is interesting and revelatory of his guitar style that he introduces himself as playing the "public saxophone".

Jimi Hendrix Night Train 1965

If Hendrix words aren't evidence enough this video of his early days in rock and roll bands surrounded by saxophone players might convince you of my claim that his guitar style involves emulation of horn playing.

Portable eTextile Electronics Lab

Now that I have assembled the world's largest collection of e-textile materials and associated tools I am trying to figure out the smallest winning subset that can form a portable lab. Here is the first cut for your comments.

Audio Sine and Square Wave Signal Generator using a Wavetable

Not my first publication, but the first one with some challenging engineering. I did this as a teenager and published in a hobby electronics magazine. I discovered by accident recently that some folk from Greece published the same ideas in a professional technical journal.

eTextile Pressure Sensing Touch Pad

These are built by sandwiching a piece of porous, spacing fabric (e.g. tulle) between two sheets of piezoresistive fabrics (from Eeonyx). For the square pad depicted below rectangular sheets are placed at right angles and wrap around the frame. On the inside they are stapled to a conductive strip on each edge. The four edges are wired to the analog inputs of a suitable microcontroller, e.g. uOSC, Teensy or Arduino.

For sensitive touch use the Eeonyx resistive fabric made from spandex.

Two Way Fabric Leaf Switch

This is assembled using hot melt adhesive backed conductive copper fabric.

Pressure Sensing Ball using eeontex Resistive spandex

A hard ball is surrounded by crumpled resistive fabric (nylon and spande)x and trapped by a round ball of silicone with holes in it. Sensing in various orientations is achieved by wrapping conductors between the holes of the silicon ball.

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