My Hardware Units - for What, Why and How

Stereo Noise Gate What: Used to gate-out excessive audio noise Why: Created because the Yamaha PSS-790's Audio Output was execssively noisy How: Using Analogue Switches and Comparators

MIDI Data Filter What:  Used to extract a single MIDI Channel from a multiple channel path Why: Created because the Yamaha PSS-790 doesn't have the Local-Off facility How: Using a 68HC11 microprocessor

Sustain Pedal Unit What: Used with a foot pedal to produce sustained notes just like on a piano Why: Created because the Fatar 61 Master Keyboard doesn't have the sustain effect How: Using a 68HC11 microprocessor

Visual Metronome What: Using a Bi-Colour LED to indicate the Metronome Audible Ticks Why: Created because Audible Ticks get buried in the music and difficult to hear How: Using a 68HC11 microprocessor

MIDI Controlled Lighting Unit What: Controlling 12 - 100W Coloured Lamps Why: Enhancing my MIDI arrangements How: Using a 68HC11 microprocessor and an Altera FPGA Gate Array to generate the Triac Timing