Blocked Jet detection on a 2C kit can it be done?

[trev]

Thanks for the reply richard. Ive been messing about building up a circuit using timers ect and i think i have come up with something that may do the task. It looks at the signals as you said and depending on how you calibrate it, it will be able to detect jets blocking on a Y feed feeding x jets if all goes well. Ive got to build a prototype and hopefully if all goes will install it for good.