The Populated Arduino Due Shield, mounted on a Due.

• AND gate to prevent outputs from being triggered when the interlock isn't engaged as well as driving the TTL outputs
• Interlocked based on Keyswitch Input and RC + Schmitt Trigger Oneshot (Due outputs flail on Startup)
• Amplifier for Speaker Output to Simulate Gate Output at Bottom LHS
• Potentiometers control Speaker Volume and Interlock Startup Delay Period
• 6N138's for MIDI Input and Optoisolated TTL Input
• 2 Pin Connectors for Gate Fibre, Status LEDs and TTL Outputs on the LHS
• 3 Pin Connectors for Push Button Inputs as Labelled on RHS
• Status LCD connector on RHS with Contrast Pot above