image updates
Adding default definition for LED_BUILTIN.
added list-abs to pd library
Changed default pins for PWM and digital output, since PWM doesn't work on PIN2. Clarified serial port controls.
Fixed pin label.
Fixing default window state.
Updated and fleshed out 1.c.iii.1
Changing LED to Pin3 PWM output; fixing naming.
Adding first draft of networked conductor/instrument interface in Pd for assignment 1.c.v.
Merge branch 'master' into gh-pages
Updating index files.