Note: the intervals below assume the Major scale, i.e. Ionian, as the reference point, so an interval group for Ionian would be 2, 3, 4, 5, 6, 7 and for Aeolian would be 2, b3, 4, 5, b6, b7 and for the Altered scale it would be b2, b3, 3, b4, b5, b6, b7.
The tool to the left is designed to be used alongside Wayne Krantz's Improviser's OS.
Choose how many notes you want in the scale from 2 to 11 and the tool will give you a list of intervals in that scale. The tool will give you all the intervals minus the root itself, so if you pick 6 notes you actually get 5 + root.
From there you have to pick a root (any of the 12 tones will do) and a four fret wide part of the fingerboard. Set your metronome to a desirable speed and off you go. You're only allowed to use the notes in your "scale" and you have to stay within that position on the fretboard. Record your playing for a while and then play it back to see if there are any cool ideas. Working randomly in this fashion will open up the fretboard for you and new sonic palettes. Hopefully.
I've decided I want 6 notes in my scale so I select "5" on the tool and I get...
b2 3 4 b5 7
I then pick a root, let's say A and a 4 fret wide part of the fingerboard, let's say from frets 9 to 12. This gives me the following "allowed" notes for my jamming:
You might have noticed that there are no scale notes on the G string in this part of the fretboard. Those are the rules, deal with it!
Once you find you're playing this position too easily and no new ideas are coming out then it's time to move elsewhere on the fretboard or pick another root or another scale (interval group) altogether.