The Eb Diminished Arpeggio contains the following notes:

Eb – Gb – Bbb

It is essentially an Eb minor chord, with a flat 5.

Open Position

Here’s how to play the E flat diminished arpeggio in the open position.

Diminished-Arpeggio-Frets-Key-Eb-Pos-Open-Shape-0

Diminished-Arpeggio-Notes-Key-Eb-Pos-Open-Shape-0

1st Position (lowest fret is 1):

Diminished-Arpeggio-Frets-Key-Eb-Pos-1-Shape-2
Diminished-Arpeggio-Notes-Key-Eb-Pos-1-Shape-2

4th Position (lowest fret is 4):

Diminished-Arpeggio-Frets-Key-Eb-Pos-4-Shape-3

Diminished-Arpeggio-Notes-Key-Eb-Pos-4-Shape-3

5th Position (lowest fret is 5):

Diminished-Arpeggio-Frets-Key-Eb-Pos-5-Shape-4

Diminished-Arpeggio-Notes-Key-Eb-Pos-5-Shape-4

8th Position (lowest fret is 8):

Diminished-Arpeggio-Frets-Key-Eb-Pos-8-Shape-5
Diminished-Arpeggio-Notes-Key-Eb-Pos-8-Shape-5

11th Position (lowest fret is 11):

Diminished-Arpeggio-Frets-Key-Eb-Pos-11-Shape-1

Diminished-Arpeggio-Notes-Key-Eb-Pos-11-Shape-1

Further Reading:

guitar course pic yellow