MIDI Shield Musical Breakout Board Instrument Digital Interface Adapter Plate
MIDI adapter plate provides MIDI – IN and MIDI – OUT connection, and MIDI THRU port. MIDI – port is light IN isolation, to prevent the ground loop. MIDI adapter plate can be installed directly like a shield at the top of the Arduino board: connect MIDI – IN/THRU to for Arduino hardware RX pin, connect MIDI – OUT to TX.