[mod] How to clock the rungler from external clock?

[keei]

[mod] How to clock the rungler from external clock?
looking at the schematics one should cut the P2 going to 4021 clock input and connect it to the switch of a jack with the the main jack input going to the clock input.
Is there a need for a protection circuit on the input like a diode?

[keei]

I have found possible solution here:
http://casperelectronics.com/rungle-mods/

[kweiwen]

@keei sorry i usually commit from the terminal and thanks for your feedback.