8-channel MIDI Trigger Board designed for controlling relays, lights, drums, solenoids, and other trigger-based devices from MIDI equipment.

This module converts MIDI note messages into eight independent trigger outputs corresponding to notes A–G (+1 any key). Ideal for interactive installations, DIY electronic instruments, lighting control, percussion triggering, and experimental MIDI projects.

Use a MIDI keyboard, sequencer, drum machine, or DAW to trigger external hardware directly. For example, control multiple spotlights from a MIDI controller keyboard or trigger external percussion circuits from a sequencer.

Specifications:

• 8 × open-collector (ULN2803) trigger outputs, suitable for driving active-low relay boards, PLC inputs and logic interfaces.
• MIDI note-to-trigger conversion (Notes A–G)
• LED activity indicators
• Standard MIDI DIN input
• 5v JST Connector
• ATMEGA328 Microcontroller
• ULN2803G Darlington driver array

Measurements:

• 46mm x 74mm x 23mm
• 4 x 2mm mount holes